diff options
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/cipher-builtin.c.inc | 132 | ||||
| -rw-r--r-- | crypto/cipher-gcrypt.c.inc | 143 | ||||
| -rw-r--r-- | crypto/cipher-gnutls.c.inc | 335 | ||||
| -rw-r--r-- | crypto/cipher-nettle.c.inc | 26 | ||||
| -rw-r--r-- | crypto/cipher.c | 30 | ||||
| -rw-r--r-- | crypto/desrfb.c | 416 | ||||
| -rw-r--r-- | crypto/hash-gnutls.c | 104 | ||||
| -rw-r--r-- | crypto/hmac-gnutls.c | 139 | ||||
| -rw-r--r-- | crypto/init.c | 62 | ||||
| -rw-r--r-- | crypto/meson.build | 12 | ||||
| -rw-r--r-- | crypto/pbkdf-gnutls.c | 90 |
11 files changed, 697 insertions, 792 deletions
diff --git a/crypto/cipher-builtin.c.inc b/crypto/cipher-builtin.c.inc index 7597cf4a10..b409089095 100644 --- a/crypto/cipher-builtin.c.inc +++ b/crypto/cipher-builtin.c.inc @@ -19,8 +19,6 @@ */ #include "crypto/aes.h" -#include "crypto/desrfb.h" -#include "crypto/xts.h" typedef struct QCryptoCipherBuiltinAESContext QCryptoCipherBuiltinAESContext; struct QCryptoCipherBuiltinAESContext { @@ -32,7 +30,6 @@ typedef struct QCryptoCipherBuiltinAES QCryptoCipherBuiltinAES; struct QCryptoCipherBuiltinAES { QCryptoCipher base; QCryptoCipherBuiltinAESContext key; - QCryptoCipherBuiltinAESContext key_tweak; uint8_t iv[AES_BLOCK_SIZE]; }; @@ -194,39 +191,6 @@ static int qcrypto_cipher_aes_decrypt_cbc(QCryptoCipher *cipher, return 0; } -static int qcrypto_cipher_aes_encrypt_xts(QCryptoCipher *cipher, - const void *in, void *out, - size_t len, Error **errp) -{ - QCryptoCipherBuiltinAES *ctx - = container_of(cipher, QCryptoCipherBuiltinAES, base); - - if (!qcrypto_length_check(len, AES_BLOCK_SIZE, errp)) { - return -1; - } - xts_encrypt(&ctx->key, &ctx->key_tweak, - do_aes_encrypt_ecb, do_aes_decrypt_ecb, - ctx->iv, len, out, in); - return 0; -} - -static int qcrypto_cipher_aes_decrypt_xts(QCryptoCipher *cipher, - const void *in, void *out, - size_t len, Error **errp) -{ - QCryptoCipherBuiltinAES *ctx - = container_of(cipher, QCryptoCipherBuiltinAES, base); - - if (!qcrypto_length_check(len, AES_BLOCK_SIZE, errp)) { - return -1; - } - xts_decrypt(&ctx->key, &ctx->key_tweak, - do_aes_encrypt_ecb, do_aes_decrypt_ecb, - ctx->iv, len, out, in); - return 0; -} - - static int qcrypto_cipher_aes_setiv(QCryptoCipher *cipher, const uint8_t *iv, size_t niv, Error **errp) { @@ -257,84 +221,16 @@ static const struct QCryptoCipherDriver qcrypto_cipher_aes_driver_cbc = { .cipher_free = qcrypto_cipher_ctx_free, }; -static const struct QCryptoCipherDriver qcrypto_cipher_aes_driver_xts = { - .cipher_encrypt = qcrypto_cipher_aes_encrypt_xts, - .cipher_decrypt = qcrypto_cipher_aes_decrypt_xts, - .cipher_setiv = qcrypto_cipher_aes_setiv, - .cipher_free = qcrypto_cipher_ctx_free, -}; - - -typedef struct QCryptoCipherBuiltinDESRFB QCryptoCipherBuiltinDESRFB; -struct QCryptoCipherBuiltinDESRFB { - QCryptoCipher base; - - /* C.f. alg_key_len[QCRYPTO_CIPHER_ALG_DES_RFB] */ - uint8_t key[8]; -}; - -static int qcrypto_cipher_encrypt_des_rfb(QCryptoCipher *cipher, - const void *in, void *out, - size_t len, Error **errp) -{ - QCryptoCipherBuiltinDESRFB *ctx - = container_of(cipher, QCryptoCipherBuiltinDESRFB, base); - size_t i; - - if (!qcrypto_length_check(len, 8, errp)) { - return -1; - } - - deskey(ctx->key, EN0); - - for (i = 0; i < len; i += 8) { - des((void *)in + i, out + i); - } - - return 0; -} - -static int qcrypto_cipher_decrypt_des_rfb(QCryptoCipher *cipher, - const void *in, void *out, - size_t len, Error **errp) -{ - QCryptoCipherBuiltinDESRFB *ctx - = container_of(cipher, QCryptoCipherBuiltinDESRFB, base); - size_t i; - - if (!qcrypto_length_check(len, 8, errp)) { - return -1; - } - - deskey(ctx->key, DE1); - - for (i = 0; i < len; i += 8) { - des((void *)in + i, out + i); - } - - return 0; -} - -static const struct QCryptoCipherDriver qcrypto_cipher_des_rfb_driver = { - .cipher_encrypt = qcrypto_cipher_encrypt_des_rfb, - .cipher_decrypt = qcrypto_cipher_decrypt_des_rfb, - .cipher_setiv = qcrypto_cipher_no_setiv, - .cipher_free = qcrypto_cipher_ctx_free, -}; - bool qcrypto_cipher_supports(QCryptoCipherAlgorithm alg, QCryptoCipherMode mode) { switch (alg) { - case QCRYPTO_CIPHER_ALG_DES_RFB: - return mode == QCRYPTO_CIPHER_MODE_ECB; case QCRYPTO_CIPHER_ALG_AES_128: case QCRYPTO_CIPHER_ALG_AES_192: case QCRYPTO_CIPHER_ALG_AES_256: switch (mode) { case QCRYPTO_CIPHER_MODE_ECB: case QCRYPTO_CIPHER_MODE_CBC: - case QCRYPTO_CIPHER_MODE_XTS: return true; default: return false; @@ -356,18 +252,6 @@ static QCryptoCipher *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg, } switch (alg) { - case QCRYPTO_CIPHER_ALG_DES_RFB: - if (mode == QCRYPTO_CIPHER_MODE_ECB) { - QCryptoCipherBuiltinDESRFB *ctx; - - ctx = g_new0(QCryptoCipherBuiltinDESRFB, 1); - ctx->base.driver = &qcrypto_cipher_des_rfb_driver; - memcpy(ctx->key, key, sizeof(ctx->key)); - - return &ctx->base; - } - goto bad_mode; - case QCRYPTO_CIPHER_ALG_AES_128: case QCRYPTO_CIPHER_ALG_AES_192: case QCRYPTO_CIPHER_ALG_AES_256: @@ -382,9 +266,6 @@ static QCryptoCipher *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg, case QCRYPTO_CIPHER_MODE_CBC: drv = &qcrypto_cipher_aes_driver_cbc; break; - case QCRYPTO_CIPHER_MODE_XTS: - drv = &qcrypto_cipher_aes_driver_xts; - break; default: goto bad_mode; } @@ -392,19 +273,6 @@ static QCryptoCipher *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg, ctx = g_new0(QCryptoCipherBuiltinAES, 1); ctx->base.driver = drv; - if (mode == QCRYPTO_CIPHER_MODE_XTS) { - nkey /= 2; - if (AES_set_encrypt_key(key + nkey, nkey * 8, - &ctx->key_tweak.enc)) { - error_setg(errp, "Failed to set encryption key"); - goto error; - } - if (AES_set_decrypt_key(key + nkey, nkey * 8, - &ctx->key_tweak.dec)) { - error_setg(errp, "Failed to set decryption key"); - goto error; - } - } if (AES_set_encrypt_key(key, nkey * 8, &ctx->key.enc)) { error_setg(errp, "Failed to set encryption key"); goto error; diff --git a/crypto/cipher-gcrypt.c.inc b/crypto/cipher-gcrypt.c.inc index 42d4137534..a6a0117717 100644 --- a/crypto/cipher-gcrypt.c.inc +++ b/crypto/cipher-gcrypt.c.inc @@ -18,17 +18,13 @@ * */ -#ifdef CONFIG_QEMU_PRIVATE_XTS -#include "crypto/xts.h" -#endif - #include <gcrypt.h> bool qcrypto_cipher_supports(QCryptoCipherAlgorithm alg, QCryptoCipherMode mode) { switch (alg) { - case QCRYPTO_CIPHER_ALG_DES_RFB: + case QCRYPTO_CIPHER_ALG_DES: case QCRYPTO_CIPHER_ALG_3DES: case QCRYPTO_CIPHER_ALG_AES_128: case QCRYPTO_CIPHER_ALG_AES_192: @@ -59,10 +55,6 @@ typedef struct QCryptoCipherGcrypt { QCryptoCipher base; gcry_cipher_hd_t handle; size_t blocksize; -#ifdef CONFIG_QEMU_PRIVATE_XTS - gcry_cipher_hd_t tweakhandle; - uint8_t iv[XTS_BLOCK_SIZE]; -#endif } QCryptoCipherGcrypt; @@ -178,90 +170,6 @@ static const struct QCryptoCipherDriver qcrypto_gcrypt_ctr_driver = { .cipher_free = qcrypto_gcrypt_ctx_free, }; -#ifdef CONFIG_QEMU_PRIVATE_XTS -static void qcrypto_gcrypt_xts_ctx_free(QCryptoCipher *cipher) -{ - QCryptoCipherGcrypt *ctx = container_of(cipher, QCryptoCipherGcrypt, base); - - gcry_cipher_close(ctx->tweakhandle); - qcrypto_gcrypt_ctx_free(cipher); -} - -static void qcrypto_gcrypt_xts_wrape(const void *ctx, size_t length, - uint8_t *dst, const uint8_t *src) -{ - gcry_error_t err; - err = gcry_cipher_encrypt((gcry_cipher_hd_t)ctx, dst, length, src, length); - g_assert(err == 0); -} - -static void qcrypto_gcrypt_xts_wrapd(const void *ctx, size_t length, - uint8_t *dst, const uint8_t *src) -{ - gcry_error_t err; - err = gcry_cipher_decrypt((gcry_cipher_hd_t)ctx, dst, length, src, length); - g_assert(err == 0); -} - -static int qcrypto_gcrypt_xts_encrypt(QCryptoCipher *cipher, const void *in, - void *out, size_t len, Error **errp) -{ - QCryptoCipherGcrypt *ctx = container_of(cipher, QCryptoCipherGcrypt, base); - - if (len & (ctx->blocksize - 1)) { - error_setg(errp, "Length %zu must be a multiple of block size %zu", - len, ctx->blocksize); - return -1; - } - - xts_encrypt(ctx->handle, ctx->tweakhandle, - qcrypto_gcrypt_xts_wrape, qcrypto_gcrypt_xts_wrapd, - ctx->iv, len, out, in); - return 0; -} - -static int qcrypto_gcrypt_xts_decrypt(QCryptoCipher *cipher, const void *in, - void *out, size_t len, Error **errp) -{ - QCryptoCipherGcrypt *ctx = container_of(cipher, QCryptoCipherGcrypt, base); - - if (len & (ctx->blocksize - 1)) { - error_setg(errp, "Length %zu must be a multiple of block size %zu", - len, ctx->blocksize); - return -1; - } - - xts_decrypt(ctx->handle, ctx->tweakhandle, - qcrypto_gcrypt_xts_wrape, qcrypto_gcrypt_xts_wrapd, - ctx->iv, len, out, in); - return 0; -} - -static int qcrypto_gcrypt_xts_setiv(QCryptoCipher *cipher, - const uint8_t *iv, size_t niv, - Error **errp) -{ - QCryptoCipherGcrypt *ctx = container_of(cipher, QCryptoCipherGcrypt, base); - - if (niv != ctx->blocksize) { - error_setg(errp, "Expected IV size %zu not %zu", - ctx->blocksize, niv); - return -1; - } - - memcpy(ctx->iv, iv, niv); - return 0; -} - -static const struct QCryptoCipherDriver qcrypto_gcrypt_xts_driver = { - .cipher_encrypt = qcrypto_gcrypt_xts_encrypt, - .cipher_decrypt = qcrypto_gcrypt_xts_decrypt, - .cipher_setiv = qcrypto_gcrypt_xts_setiv, - .cipher_free = qcrypto_gcrypt_xts_ctx_free, -}; -#endif /* CONFIG_QEMU_PRIVATE_XTS */ - - static QCryptoCipher *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg, QCryptoCipherMode mode, const uint8_t *key, @@ -278,7 +186,7 @@ static QCryptoCipher *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg, } switch (alg) { - case QCRYPTO_CIPHER_ALG_DES_RFB: + case QCRYPTO_CIPHER_ALG_DES: gcryalg = GCRY_CIPHER_DES; break; case QCRYPTO_CIPHER_ALG_3DES: @@ -323,12 +231,7 @@ static QCryptoCipher *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg, gcrymode = GCRY_CIPHER_MODE_ECB; break; case QCRYPTO_CIPHER_MODE_XTS: -#ifdef CONFIG_QEMU_PRIVATE_XTS - drv = &qcrypto_gcrypt_xts_driver; - gcrymode = GCRY_CIPHER_MODE_ECB; -#else gcrymode = GCRY_CIPHER_MODE_XTS; -#endif break; case QCRYPTO_CIPHER_MODE_CBC: gcrymode = GCRY_CIPHER_MODE_CBC; @@ -354,44 +257,7 @@ static QCryptoCipher *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg, } ctx->blocksize = gcry_cipher_get_algo_blklen(gcryalg); -#ifdef CONFIG_QEMU_PRIVATE_XTS - if (mode == QCRYPTO_CIPHER_MODE_XTS) { - if (ctx->blocksize != XTS_BLOCK_SIZE) { - error_setg(errp, - "Cipher block size %zu must equal XTS block size %d", - ctx->blocksize, XTS_BLOCK_SIZE); - goto error; - } - err = gcry_cipher_open(&ctx->tweakhandle, gcryalg, gcrymode, 0); - if (err != 0) { - error_setg(errp, "Cannot initialize cipher: %s", - gcry_strerror(err)); - goto error; - } - } -#endif - - if (alg == QCRYPTO_CIPHER_ALG_DES_RFB) { - /* We're using standard DES cipher from gcrypt, so we need - * to munge the key so that the results are the same as the - * bizarre RFB variant of DES :-) - */ - uint8_t *rfbkey = qcrypto_cipher_munge_des_rfb_key(key, nkey); - err = gcry_cipher_setkey(ctx->handle, rfbkey, nkey); - g_free(rfbkey); - } else { -#ifdef CONFIG_QEMU_PRIVATE_XTS - if (mode == QCRYPTO_CIPHER_MODE_XTS) { - nkey /= 2; - err = gcry_cipher_setkey(ctx->tweakhandle, key + nkey, nkey); - if (err != 0) { - error_setg(errp, "Cannot set key: %s", gcry_strerror(err)); - goto error; - } - } -#endif - err = gcry_cipher_setkey(ctx->handle, key, nkey); - } + err = gcry_cipher_setkey(ctx->handle, key, nkey); if (err != 0) { error_setg(errp, "Cannot set key: %s", gcry_strerror(err)); goto error; @@ -400,9 +266,6 @@ static QCryptoCipher *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg, return &ctx->base; error: -#ifdef CONFIG_QEMU_PRIVATE_XTS - gcry_cipher_close(ctx->tweakhandle); -#endif gcry_cipher_close(ctx->handle); g_free(ctx); return NULL; diff --git a/crypto/cipher-gnutls.c.inc b/crypto/cipher-gnutls.c.inc new file mode 100644 index 0000000000..501e4e07a5 --- /dev/null +++ b/crypto/cipher-gnutls.c.inc @@ -0,0 +1,335 @@ +/* + * QEMU Crypto cipher gnutls algorithms + * + * Copyright (c) 2021 Red Hat, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + * + */ + +#include "qemu/osdep.h" +#include "cipherpriv.h" + +#include <gnutls/crypto.h> + +#if GNUTLS_VERSION_NUMBER >= 0x030608 +#define QEMU_GNUTLS_XTS +#endif + +bool qcrypto_cipher_supports(QCryptoCipherAlgorithm alg, + QCryptoCipherMode mode) +{ + + switch (mode) { + case QCRYPTO_CIPHER_MODE_ECB: + case QCRYPTO_CIPHER_MODE_CBC: + switch (alg) { + case QCRYPTO_CIPHER_ALG_AES_128: + case QCRYPTO_CIPHER_ALG_AES_192: + case QCRYPTO_CIPHER_ALG_AES_256: + case QCRYPTO_CIPHER_ALG_DES: + case QCRYPTO_CIPHER_ALG_3DES: + return true; + default: + return false; + } +#ifdef QEMU_GNUTLS_XTS + case QCRYPTO_CIPHER_MODE_XTS: + switch (alg) { + case QCRYPTO_CIPHER_ALG_AES_128: + case QCRYPTO_CIPHER_ALG_AES_256: + return true; + default: + return false; + } +#endif + default: + return false; + } +} + +typedef struct QCryptoCipherGnutls QCryptoCipherGnutls; +struct QCryptoCipherGnutls { + QCryptoCipher base; + gnutls_cipher_hd_t handle; /* XTS & CBC mode */ + gnutls_cipher_algorithm_t galg; /* ECB mode */ + guint8 *key; /* ECB mode */ + size_t nkey; /* ECB mode */ + size_t blocksize; +}; + + +static void +qcrypto_gnutls_cipher_free(QCryptoCipher *cipher) +{ + QCryptoCipherGnutls *ctx = container_of(cipher, QCryptoCipherGnutls, base); + + g_free(ctx->key); + if (ctx->handle) { + gnutls_cipher_deinit(ctx->handle); + } + g_free(ctx); +} + + +static int +qcrypto_gnutls_cipher_encrypt(QCryptoCipher *cipher, + const void *in, + void *out, + size_t len, + Error **errp) +{ + QCryptoCipherGnutls *ctx = container_of(cipher, QCryptoCipherGnutls, base); + int err; + + if (len % ctx->blocksize) { + error_setg(errp, "Length %zu must be a multiple of block size %zu", + len, ctx->blocksize); + return -1; + } + + if (ctx->handle) { /* CBC / XTS mode */ + err = gnutls_cipher_encrypt2(ctx->handle, + in, len, + out, len); + if (err != 0) { + error_setg(errp, "Cannot encrypt data: %s", + gnutls_strerror(err)); + return -1; + } + } else { /* ECB mode very inefficiently faked with CBC */ + g_autofree unsigned char *iv = g_new0(unsigned char, ctx->blocksize); + while (len) { + gnutls_cipher_hd_t handle; + gnutls_datum_t gkey = { (unsigned char *)ctx->key, ctx->nkey }; + int err = gnutls_cipher_init(&handle, ctx->galg, &gkey, NULL); + if (err != 0) { + error_setg(errp, "Cannot initialize cipher: %s", + gnutls_strerror(err)); + return -1; + } + + gnutls_cipher_set_iv(handle, iv, ctx->blocksize); + + err = gnutls_cipher_encrypt2(handle, + in, ctx->blocksize, + out, ctx->blocksize); + if (err != 0) { + gnutls_cipher_deinit(handle); + error_setg(errp, "Cannot encrypt data: %s", + gnutls_strerror(err)); + return -1; + } + gnutls_cipher_deinit(handle); + + len -= ctx->blocksize; + in += ctx->blocksize; + out += ctx->blocksize; + } + } + + return 0; +} + + +static int +qcrypto_gnutls_cipher_decrypt(QCryptoCipher *cipher, + const void *in, + void *out, + size_t len, + Error **errp) +{ + QCryptoCipherGnutls *ctx = container_of(cipher, QCryptoCipherGnutls, base); + int err; + + if (len % ctx->blocksize) { + error_setg(errp, "Length %zu must be a multiple of block size %zu", + len, ctx->blocksize); + return -1; + } + + if (ctx->handle) { /* CBC / XTS mode */ + err = gnutls_cipher_decrypt2(ctx->handle, + in, len, + out, len); + + if (err != 0) { + error_setg(errp, "Cannot decrypt data: %s", + gnutls_strerror(err)); + return -1; + } + } else { /* ECB mode very inefficiently faked with CBC */ + g_autofree unsigned char *iv = g_new0(unsigned char, ctx->blocksize); + while (len) { + gnutls_cipher_hd_t handle; + gnutls_datum_t gkey = { (unsigned char *)ctx->key, ctx->nkey }; + int err = gnutls_cipher_init(&handle, ctx->galg, &gkey, NULL); + if (err != 0) { + error_setg(errp, "Cannot initialize cipher: %s", + gnutls_strerror(err)); + return -1; + } + + gnutls_cipher_set_iv(handle, iv, ctx->blocksize); + + err = gnutls_cipher_decrypt2(handle, + in, ctx->blocksize, + out, ctx->blocksize); + if (err != 0) { + gnutls_cipher_deinit(handle); + error_setg(errp, "Cannot encrypt data: %s", + gnutls_strerror(err)); + return -1; + } + gnutls_cipher_deinit(handle); + + len -= ctx->blocksize; + in += ctx->blocksize; + out += ctx->blocksize; + } + } + + return 0; +} + +static int +qcrypto_gnutls_cipher_setiv(QCryptoCipher *cipher, + const uint8_t *iv, size_t niv, + Error **errp) +{ + QCryptoCipherGnutls *ctx = container_of(cipher, QCryptoCipherGnutls, base); + + if (niv != ctx->blocksize) { + error_setg(errp, "Expected IV size %zu not %zu", + ctx->blocksize, niv); + return -1; + } + + gnutls_cipher_set_iv(ctx->handle, (unsigned char *)iv, niv); + + return 0; +} + + +static struct QCryptoCipherDriver gnutls_driver = { + .cipher_encrypt = qcrypto_gnutls_cipher_encrypt, + .cipher_decrypt = qcrypto_gnutls_cipher_decrypt, + .cipher_setiv = qcrypto_gnutls_cipher_setiv, + .cipher_free = qcrypto_gnutls_cipher_free, +}; + +static QCryptoCipher *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg, + QCryptoCipherMode mode, + const uint8_t *key, + size_t nkey, + Error **errp) +{ + QCryptoCipherGnutls *ctx; + gnutls_datum_t gkey = { (unsigned char *)key, nkey }; + gnutls_cipher_algorithm_t galg = GNUTLS_CIPHER_UNKNOWN; + int err; + + switch (mode) { +#ifdef QEMU_GNUTLS_XTS + case QCRYPTO_CIPHER_MODE_XTS: + switch (alg) { + case QCRYPTO_CIPHER_ALG_AES_128: + galg = GNUTLS_CIPHER_AES_128_XTS; + break; + case QCRYPTO_CIPHER_ALG_AES_256: + galg = GNUTLS_CIPHER_AES_256_XTS; + break; + default: + break; + } + break; +#endif + + case QCRYPTO_CIPHER_MODE_ECB: + case QCRYPTO_CIPHER_MODE_CBC: + switch (alg) { + case QCRYPTO_CIPHER_ALG_AES_128: + galg = GNUTLS_CIPHER_AES_128_CBC; + break; + case QCRYPTO_CIPHER_ALG_AES_192: + galg = GNUTLS_CIPHER_AES_192_CBC; + break; + case QCRYPTO_CIPHER_ALG_AES_256: + galg = GNUTLS_CIPHER_AES_256_CBC; + break; + case QCRYPTO_CIPHER_ALG_DES: + galg = GNUTLS_CIPHER_DES_CBC; + break; + case QCRYPTO_CIPHER_ALG_3DES: + galg = GNUTLS_CIPHER_3DES_CBC; + break; + default: + break; + } + break; + default: + break; + } + + if (galg == GNUTLS_CIPHER_UNKNOWN) { + error_setg(errp, "Unsupported cipher algorithm %s with %s mode", + QCryptoCipherAlgorithm_str(alg), + QCryptoCipherMode_str(mode)); + return NULL; + } + + if (!qcrypto_cipher_validate_key_length(alg, mode, nkey, errp)) { + return NULL; + } + + ctx = g_new0(QCryptoCipherGnutls, 1); + ctx->base.driver = &gnutls_driver; + + if (mode == QCRYPTO_CIPHER_MODE_ECB) { + ctx->key = g_new0(guint8, nkey); + memcpy(ctx->key, key, nkey); + ctx->nkey = nkey; + ctx->galg = galg; + } else { + err = gnutls_cipher_init(&ctx->handle, galg, &gkey, NULL); + if (err != 0) { + error_setg(errp, "Cannot initialize cipher: %s", + gnutls_strerror(err)); + goto error; + } + } + + if (alg == QCRYPTO_CIPHER_ALG_DES || + alg == QCRYPTO_CIPHER_ALG_3DES) + ctx->blocksize = 8; + else + ctx->blocksize = 16; + + /* + * Our API contract for requires iv to be optional + * but nettle gets unhappy when called by gnutls + * in this case, so we just force set a default + * all-zeros IV, to match behaviour of other backends. + */ + if (mode != QCRYPTO_CIPHER_MODE_ECB) { + g_autofree unsigned char *iv = g_new0(unsigned char, ctx->blocksize); + gnutls_cipher_set_iv(ctx->handle, iv, ctx->blocksize); + } + + return &ctx->base; + + error: + qcrypto_gnutls_cipher_free(&ctx->base); + return NULL; +} diff --git a/crypto/cipher-nettle.c.inc b/crypto/cipher-nettle.c.inc index fc6f40c026..24cc61f87b 100644 --- a/crypto/cipher-nettle.c.inc +++ b/crypto/cipher-nettle.c.inc @@ -235,11 +235,11 @@ static const struct QCryptoCipherDriver NAME##_driver_xts = { \ DEFINE_XTS(NAME, TYPE, BLEN, ENCRYPT, DECRYPT) -typedef struct QCryptoNettleDESRFB { +typedef struct QCryptoNettleDES { QCryptoCipher base; struct des_ctx key; uint8_t iv[DES_BLOCK_SIZE]; -} QCryptoNettleDESRFB; +} QCryptoNettleDES; static void des_encrypt_native(const void *ctx, size_t length, uint8_t *dst, const uint8_t *src) @@ -253,7 +253,7 @@ static void des_decrypt_native(const void *ctx, size_t length, des_decrypt(ctx, length, dst, src); } -DEFINE_ECB_CBC_CTR(qcrypto_nettle_des_rfb, QCryptoNettleDESRFB, +DEFINE_ECB_CBC_CTR(qcrypto_nettle_des, QCryptoNettleDES, DES_BLOCK_SIZE, des_encrypt_native, des_decrypt_native) @@ -431,7 +431,7 @@ bool qcrypto_cipher_supports(QCryptoCipherAlgorithm alg, QCryptoCipherMode mode) { switch (alg) { - case QCRYPTO_CIPHER_ALG_DES_RFB: + case QCRYPTO_CIPHER_ALG_DES: case QCRYPTO_CIPHER_ALG_3DES: case QCRYPTO_CIPHER_ALG_AES_128: case QCRYPTO_CIPHER_ALG_AES_192: @@ -480,32 +480,28 @@ static QCryptoCipher *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg, } switch (alg) { - case QCRYPTO_CIPHER_ALG_DES_RFB: + case QCRYPTO_CIPHER_ALG_DES: { - QCryptoNettleDESRFB *ctx; + QCryptoNettleDES *ctx; const QCryptoCipherDriver *drv; - uint8_t *rfbkey; switch (mode) { case QCRYPTO_CIPHER_MODE_ECB: - drv = &qcrypto_nettle_des_rfb_driver_ecb; + drv = &qcrypto_nettle_des_driver_ecb; break; case QCRYPTO_CIPHER_MODE_CBC: - drv = &qcrypto_nettle_des_rfb_driver_cbc; + drv = &qcrypto_nettle_des_driver_cbc; break; case QCRYPTO_CIPHER_MODE_CTR: - drv = &qcrypto_nettle_des_rfb_driver_ctr; + drv = &qcrypto_nettle_des_driver_ctr; break; default: goto bad_cipher_mode; } - ctx = g_new0(QCryptoNettleDESRFB, 1); + ctx = g_new0(QCryptoNettleDES, 1); ctx->base.driver = drv; - - rfbkey = qcrypto_cipher_munge_des_rfb_key(key, nkey); - des_set_key(&ctx->key, rfbkey); - g_free(rfbkey); + des_set_key(&ctx->key, key); return &ctx->base; } diff --git a/crypto/cipher.c b/crypto/cipher.c index 068b2fb867..74b09a5b26 100644 --- a/crypto/cipher.c +++ b/crypto/cipher.c @@ -29,7 +29,7 @@ static const size_t alg_key_len[QCRYPTO_CIPHER_ALG__MAX] = { [QCRYPTO_CIPHER_ALG_AES_128] = 16, [QCRYPTO_CIPHER_ALG_AES_192] = 24, [QCRYPTO_CIPHER_ALG_AES_256] = 32, - [QCRYPTO_CIPHER_ALG_DES_RFB] = 8, + [QCRYPTO_CIPHER_ALG_DES] = 8, [QCRYPTO_CIPHER_ALG_3DES] = 24, [QCRYPTO_CIPHER_ALG_CAST5_128] = 16, [QCRYPTO_CIPHER_ALG_SERPENT_128] = 16, @@ -44,7 +44,7 @@ static const size_t alg_block_len[QCRYPTO_CIPHER_ALG__MAX] = { [QCRYPTO_CIPHER_ALG_AES_128] = 16, [QCRYPTO_CIPHER_ALG_AES_192] = 16, [QCRYPTO_CIPHER_ALG_AES_256] = 16, - [QCRYPTO_CIPHER_ALG_DES_RFB] = 8, + [QCRYPTO_CIPHER_ALG_DES] = 8, [QCRYPTO_CIPHER_ALG_3DES] = 8, [QCRYPTO_CIPHER_ALG_CAST5_128] = 8, [QCRYPTO_CIPHER_ALG_SERPENT_128] = 16, @@ -107,9 +107,9 @@ qcrypto_cipher_validate_key_length(QCryptoCipherAlgorithm alg, } if (mode == QCRYPTO_CIPHER_MODE_XTS) { - if (alg == QCRYPTO_CIPHER_ALG_DES_RFB - || alg == QCRYPTO_CIPHER_ALG_3DES) { - error_setg(errp, "XTS mode not compatible with DES-RFB/3DES"); + if (alg == QCRYPTO_CIPHER_ALG_DES || + alg == QCRYPTO_CIPHER_ALG_3DES) { + error_setg(errp, "XTS mode not compatible with DES/3DES"); return false; } if (nkey % 2) { @@ -132,28 +132,12 @@ qcrypto_cipher_validate_key_length(QCryptoCipherAlgorithm alg, return true; } -#if defined(CONFIG_GCRYPT) || defined(CONFIG_NETTLE) -static uint8_t * -qcrypto_cipher_munge_des_rfb_key(const uint8_t *key, - size_t nkey) -{ - uint8_t *ret = g_new0(uint8_t, nkey); - size_t i; - for (i = 0; i < nkey; i++) { - uint8_t r = key[i]; - r = (r & 0xf0) >> 4 | (r & 0x0f) << 4; - r = (r & 0xcc) >> 2 | (r & 0x33) << 2; - r = (r & 0xaa) >> 1 | (r & 0x55) << 1; - ret[i] = r; - } - return ret; -} -#endif /* CONFIG_GCRYPT || CONFIG_NETTLE */ - #ifdef CONFIG_GCRYPT #include "cipher-gcrypt.c.inc" #elif defined CONFIG_NETTLE #include "cipher-nettle.c.inc" +#elif defined CONFIG_GNUTLS_CRYPTO +#include "cipher-gnutls.c.inc" #else #include "cipher-builtin.c.inc" #endif diff --git a/crypto/desrfb.c b/crypto/desrfb.c deleted file mode 100644 index b2a105ebbc..0000000000 --- a/crypto/desrfb.c +++ /dev/null @@ -1,416 +0,0 @@ -/* - * This is D3DES (V5.09) by Richard Outerbridge with the double and - * triple-length support removed for use in VNC. Also the bytebit[] array - * has been reversed so that the most significant bit in each byte of the - * key is ignored, not the least significant. - * - * These changes are: - * Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved. - * - * This software is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - */ - -/* D3DES (V5.09) - - * - * A portable, public domain, version of the Data Encryption Standard. - * - * Written with Symantec's THINK (Lightspeed) C by Richard Outerbridge. - * Thanks to: Dan Hoey for his excellent Initial and Inverse permutation - * code; Jim Gillogly & Phil Karn for the DES key schedule code; Dennis - * Ferguson, Eric Young and Dana How for comparing notes; and Ray Lau, - * for humouring me on. - * - * Copyright (c) 1988,1989,1990,1991,1992 by Richard Outerbridge. - * (GEnie : OUTER; CIS : [71755,204]) Graven Imagery, 1992. - */ - -#include "qemu/osdep.h" -#include "crypto/desrfb.h" - -static void scrunch(unsigned char *, unsigned long *); -static void unscrun(unsigned long *, unsigned char *); -static void desfunc(unsigned long *, unsigned long *); -static void cookey(unsigned long *); - -static unsigned long KnL[32] = { 0L }; - -static const unsigned short bytebit[8] = { - 01, 02, 04, 010, 020, 040, 0100, 0200 }; - -static const unsigned long bigbyte[24] = { - 0x800000L, 0x400000L, 0x200000L, 0x100000L, - 0x80000L, 0x40000L, 0x20000L, 0x10000L, - 0x8000L, 0x4000L, 0x2000L, 0x1000L, - 0x800L, 0x400L, 0x200L, 0x100L, - 0x80L, 0x40L, 0x20L, 0x10L, - 0x8L, 0x4L, 0x2L, 0x1L }; - -/* Use the key schedule specified in the Standard (ANSI X3.92-1981). */ - -static const unsigned char pc1[56] = { - 56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17, - 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35, - 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, - 13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3 }; - -static const unsigned char totrot[16] = { - 1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28 }; - -static const unsigned char pc2[48] = { - 13, 16, 10, 23, 0, 4, 2, 27, 14, 5, 20, 9, - 22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1, - 40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47, - 43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31 }; - -/* Thanks to James Gillogly & Phil Karn! */ -void deskey(unsigned char *key, int edf) -{ - register int i, j, l, m, n; - unsigned char pc1m[56], pcr[56]; - unsigned long kn[32]; - - for ( j = 0; j < 56; j++ ) { - l = pc1[j]; - m = l & 07; - pc1m[j] = (key[l >> 3] & bytebit[m]) ? 1 : 0; - } - for( i = 0; i < 16; i++ ) { - if( edf == DE1 ) m = (15 - i) << 1; - else m = i << 1; - n = m + 1; - kn[m] = kn[n] = 0L; - for( j = 0; j < 28; j++ ) { - l = j + totrot[i]; - if( l < 28 ) pcr[j] = pc1m[l]; - else pcr[j] = pc1m[l - 28]; - } - for( j = 28; j < 56; j++ ) { - l = j + totrot[i]; - if( l < 56 ) pcr[j] = pc1m[l]; - else pcr[j] = pc1m[l - 28]; - } - for( j = 0; j < 24; j++ ) { - if( pcr[pc2[j]] ) kn[m] |= bigbyte[j]; - if( pcr[pc2[j + 24]] ) kn[n] |= bigbyte[j]; - } - } - cookey(kn); - return; - } - -static void cookey(register unsigned long *raw1) -{ - register unsigned long *cook, *raw0; - unsigned long dough[32]; - register int i; - - cook = dough; - for( i = 0; i < 16; i++, raw1++ ) { - raw0 = raw1++; - *cook = (*raw0 & 0x00fc0000L) << 6; - *cook |= (*raw0 & 0x00000fc0L) << 10; - *cook |= (*raw1 & 0x00fc0000L) >> 10; - *cook++ |= (*raw1 & 0x00000fc0L) >> 6; - *cook = (*raw0 & 0x0003f000L) << 12; - *cook |= (*raw0 & 0x0000003fL) << 16; - *cook |= (*raw1 & 0x0003f000L) >> 4; - *cook++ |= (*raw1 & 0x0000003fL); - } - usekey(dough); - return; - } - -void usekey(register unsigned long *from) -{ - register unsigned long *to, *endp; - - to = KnL, endp = &KnL[32]; - while( to < endp ) *to++ = *from++; - return; - } - -void des(unsigned char *inblock, unsigned char *outblock) -{ - unsigned long work[2]; - - scrunch(inblock, work); - desfunc(work, KnL); - unscrun(work, outblock); - return; - } - -static void scrunch(register unsigned char *outof, register unsigned long *into) -{ - *into = (*outof++ & 0xffL) << 24; - *into |= (*outof++ & 0xffL) << 16; - *into |= (*outof++ & 0xffL) << 8; - *into++ |= (*outof++ & 0xffL); - *into = (*outof++ & 0xffL) << 24; - *into |= (*outof++ & 0xffL) << 16; - *into |= (*outof++ & 0xffL) << 8; - *into |= (*outof & 0xffL); - return; - } - -static void unscrun(register unsigned long *outof, register unsigned char *into) -{ - *into++ = (unsigned char)((*outof >> 24) & 0xffL); - *into++ = (unsigned char)((*outof >> 16) & 0xffL); - *into++ = (unsigned char)((*outof >> 8) & 0xffL); - *into++ = (unsigned char)(*outof++ & 0xffL); - *into++ = (unsigned char)((*outof >> 24) & 0xffL); - *into++ = (unsigned char)((*outof >> 16) & 0xffL); - *into++ = (unsigned char)((*outof >> 8) & 0xffL); - *into = (unsigned char)(*outof & 0xffL); - return; - } - -static const unsigned long SP1[64] = { - 0x01010400L, 0x00000000L, 0x00010000L, 0x01010404L, - 0x01010004L, 0x00010404L, 0x00000004L, 0x00010000L, - 0x00000400L, 0x01010400L, 0x01010404L, 0x00000400L, - 0x01000404L, 0x01010004L, 0x01000000L, 0x00000004L, - 0x00000404L, 0x01000400L, 0x01000400L, 0x00010400L, - 0x00010400L, 0x01010000L, 0x01010000L, 0x01000404L, - 0x00010004L, 0x01000004L, 0x01000004L, 0x00010004L, - 0x00000000L, 0x00000404L, 0x00010404L, 0x01000000L, - 0x00010000L, 0x01010404L, 0x00000004L, 0x01010000L, - 0x01010400L, 0x01000000L, 0x01000000L, 0x00000400L, - 0x01010004L, 0x00010000L, 0x00010400L, 0x01000004L, - 0x00000400L, 0x00000004L, 0x01000404L, 0x00010404L, - 0x01010404L, 0x00010004L, 0x01010000L, 0x01000404L, - 0x01000004L, 0x00000404L, 0x00010404L, 0x01010400L, - 0x00000404L, 0x01000400L, 0x01000400L, 0x00000000L, - 0x00010004L, 0x00010400L, 0x00000000L, 0x01010004L }; - -static const unsigned long SP2[64] = { - 0x80108020L, 0x80008000L, 0x00008000L, 0x00108020L, - 0x00100000L, 0x00000020L, 0x80100020L, 0x80008020L, - 0x80000020L, 0x80108020L, 0x80108000L, 0x80000000L, - 0x80008000L, 0x00100000L, 0x00000020L, 0x80100020L, - 0x00108000L, 0x00100020L, 0x80008020L, 0x00000000L, - 0x80000000L, 0x00008000L, 0x00108020L, 0x80100000L, - 0x00100020L, 0x80000020L, 0x00000000L, 0x00108000L, - 0x00008020L, 0x80108000L, 0x80100000L, 0x00008020L, - 0x00000000L, 0x00108020L, 0x80100020L, 0x00100000L, - 0x80008020L, 0x80100000L, 0x80108000L, 0x00008000L, - 0x80100000L, 0x80008000L, 0x00000020L, 0x80108020L, - 0x00108020L, 0x00000020L, 0x00008000L, 0x80000000L, - 0x00008020L, 0x80108000L, 0x00100000L, 0x80000020L, - 0x00100020L, 0x80008020L, 0x80000020L, 0x00100020L, - 0x00108000L, 0x00000000L, 0x80008000L, 0x00008020L, - 0x80000000L, 0x80100020L, 0x80108020L, 0x00108000L }; - -static const unsigned long SP3[64] = { - 0x00000208L, 0x08020200L, 0x00000000L, 0x08020008L, - 0x08000200L, 0x00000000L, 0x00020208L, 0x08000200L, - 0x00020008L, 0x08000008L, 0x08000008L, 0x00020000L, - 0x08020208L, 0x00020008L, 0x08020000L, 0x00000208L, - 0x08000000L, 0x00000008L, 0x08020200L, 0x00000200L, - 0x00020200L, 0x08020000L, 0x08020008L, 0x00020208L, - 0x08000208L, 0x00020200L, 0x00020000L, 0x08000208L, - 0x00000008L, 0x08020208L, 0x00000200L, 0x08000000L, - 0x08020200L, 0x08000000L, 0x00020008L, 0x00000208L, - 0x00020000L, 0x08020200L, 0x08000200L, 0x00000000L, - 0x00000200L, 0x00020008L, 0x08020208L, 0x08000200L, - 0x08000008L, 0x00000200L, 0x00000000L, 0x08020008L, - 0x08000208L, 0x00020000L, 0x08000000L, 0x08020208L, - 0x00000008L, 0x00020208L, 0x00020200L, 0x08000008L, - 0x08020000L, 0x08000208L, 0x00000208L, 0x08020000L, - 0x00020208L, 0x00000008L, 0x08020008L, 0x00020200L }; - -static const unsigned long SP4[64] = { - 0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L, - 0x00802080L, 0x00800081L, 0x00800001L, 0x00002001L, - 0x00000000L, 0x00802000L, 0x00802000L, 0x00802081L, - 0x00000081L, 0x00000000L, 0x00800080L, 0x00800001L, - 0x00000001L, 0x00002000L, 0x00800000L, 0x00802001L, - 0x00000080L, 0x00800000L, 0x00002001L, 0x00002080L, - 0x00800081L, 0x00000001L, 0x00002080L, 0x00800080L, - 0x00002000L, 0x00802080L, 0x00802081L, 0x00000081L, - 0x00800080L, 0x00800001L, 0x00802000L, 0x00802081L, - 0x00000081L, 0x00000000L, 0x00000000L, 0x00802000L, - 0x00002080L, 0x00800080L, 0x00800081L, 0x00000001L, - 0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L, - 0x00802081L, 0x00000081L, 0x00000001L, 0x00002000L, - 0x00800001L, 0x00002001L, 0x00802080L, 0x00800081L, - 0x00002001L, 0x00002080L, 0x00800000L, 0x00802001L, - 0x00000080L, 0x00800000L, 0x00002000L, 0x00802080L }; - -static const unsigned long SP5[64] = { - 0x00000100L, 0x02080100L, 0x02080000L, 0x42000100L, - 0x00080000L, 0x00000100L, 0x40000000L, 0x02080000L, - 0x40080100L, 0x00080000L, 0x02000100L, 0x40080100L, - 0x42000100L, 0x42080000L, 0x00080100L, 0x40000000L, - 0x02000000L, 0x40080000L, 0x40080000L, 0x00000000L, - 0x40000100L, 0x42080100L, 0x42080100L, 0x02000100L, - 0x42080000L, 0x40000100L, 0x00000000L, 0x42000000L, - 0x02080100L, 0x02000000L, 0x42000000L, 0x00080100L, - 0x00080000L, 0x42000100L, 0x00000100L, 0x02000000L, - 0x40000000L, 0x02080000L, 0x42000100L, 0x40080100L, - 0x02000100L, 0x40000000L, 0x42080000L, 0x02080100L, - 0x40080100L, 0x00000100L, 0x02000000L, 0x42080000L, - 0x42080100L, 0x00080100L, 0x42000000L, 0x42080100L, - 0x02080000L, 0x00000000L, 0x40080000L, 0x42000000L, - 0x00080100L, 0x02000100L, 0x40000100L, 0x00080000L, - 0x00000000L, 0x40080000L, 0x02080100L, 0x40000100L }; - -static const unsigned long SP6[64] = { - 0x20000010L, 0x20400000L, 0x00004000L, 0x20404010L, - 0x20400000L, 0x00000010L, 0x20404010L, 0x00400000L, - 0x20004000L, 0x00404010L, 0x00400000L, 0x20000010L, - 0x00400010L, 0x20004000L, 0x20000000L, 0x00004010L, - 0x00000000L, 0x00400010L, 0x20004010L, 0x00004000L, - 0x00404000L, 0x20004010L, 0x00000010L, 0x20400010L, - 0x20400010L, 0x00000000L, 0x00404010L, 0x20404000L, - 0x00004010L, 0x00404000L, 0x20404000L, 0x20000000L, - 0x20004000L, 0x00000010L, 0x20400010L, 0x00404000L, - 0x20404010L, 0x00400000L, 0x00004010L, 0x20000010L, - 0x00400000L, 0x20004000L, 0x20000000L, 0x00004010L, - 0x20000010L, 0x20404010L, 0x00404000L, 0x20400000L, - 0x00404010L, 0x20404000L, 0x00000000L, 0x20400010L, - 0x00000010L, 0x00004000L, 0x20400000L, 0x00404010L, - 0x00004000L, 0x00400010L, 0x20004010L, 0x00000000L, - 0x20404000L, 0x20000000L, 0x00400010L, 0x20004010L }; - -static const unsigned long SP7[64] = { - 0x00200000L, 0x04200002L, 0x04000802L, 0x00000000L, - 0x00000800L, 0x04000802L, 0x00200802L, 0x04200800L, - 0x04200802L, 0x00200000L, 0x00000000L, 0x04000002L, - 0x00000002L, 0x04000000L, 0x04200002L, 0x00000802L, - 0x04000800L, 0x00200802L, 0x00200002L, 0x04000800L, - 0x04000002L, 0x04200000L, 0x04200800L, 0x00200002L, - 0x04200000L, 0x00000800L, 0x00000802L, 0x04200802L, - 0x00200800L, 0x00000002L, 0x04000000L, 0x00200800L, - 0x04000000L, 0x00200800L, 0x00200000L, 0x04000802L, - 0x04000802L, 0x04200002L, 0x04200002L, 0x00000002L, - 0x00200002L, 0x04000000L, 0x04000800L, 0x00200000L, - 0x04200800L, 0x00000802L, 0x00200802L, 0x04200800L, - 0x00000802L, 0x04000002L, 0x04200802L, 0x04200000L, - 0x00200800L, 0x00000000L, 0x00000002L, 0x04200802L, - 0x00000000L, 0x00200802L, 0x04200000L, 0x00000800L, - 0x04000002L, 0x04000800L, 0x00000800L, 0x00200002L }; - -static const unsigned long SP8[64] = { - 0x10001040L, 0x00001000L, 0x00040000L, 0x10041040L, - 0x10000000L, 0x10001040L, 0x00000040L, 0x10000000L, - 0x00040040L, 0x10040000L, 0x10041040L, 0x00041000L, - 0x10041000L, 0x00041040L, 0x00001000L, 0x00000040L, - 0x10040000L, 0x10000040L, 0x10001000L, 0x00001040L, - 0x00041000L, 0x00040040L, 0x10040040L, 0x10041000L, - 0x00001040L, 0x00000000L, 0x00000000L, 0x10040040L, - 0x10000040L, 0x10001000L, 0x00041040L, 0x00040000L, - 0x00041040L, 0x00040000L, 0x10041000L, 0x00001000L, - 0x00000040L, 0x10040040L, 0x00001000L, 0x00041040L, - 0x10001000L, 0x00000040L, 0x10000040L, 0x10040000L, - 0x10040040L, 0x10000000L, 0x00040000L, 0x10001040L, - 0x00000000L, 0x10041040L, 0x00040040L, 0x10000040L, - 0x10040000L, 0x10001000L, 0x10001040L, 0x00000000L, - 0x10041040L, 0x00041000L, 0x00041000L, 0x00001040L, - 0x00001040L, 0x00040040L, 0x10000000L, 0x10041000L }; - -static void desfunc(register unsigned long *block, register unsigned long *keys) -{ - register unsigned long fval, work, right, leftt; - register int round; - - leftt = block[0]; - right = block[1]; - work = ((leftt >> 4) ^ right) & 0x0f0f0f0fL; - right ^= work; - leftt ^= (work << 4); - work = ((leftt >> 16) ^ right) & 0x0000ffffL; - right ^= work; - leftt ^= (work << 16); - work = ((right >> 2) ^ leftt) & 0x33333333L; - leftt ^= work; - right ^= (work << 2); - work = ((right >> 8) ^ leftt) & 0x00ff00ffL; - leftt ^= work; - right ^= (work << 8); - right = ((right << 1) | ((right >> 31) & 1L)) & 0xffffffffL; - work = (leftt ^ right) & 0xaaaaaaaaL; - leftt ^= work; - right ^= work; - leftt = ((leftt << 1) | ((leftt >> 31) & 1L)) & 0xffffffffL; - - for( round = 0; round < 8; round++ ) { - work = (right << 28) | (right >> 4); - work ^= *keys++; - fval = SP7[ work & 0x3fL]; - fval |= SP5[(work >> 8) & 0x3fL]; - fval |= SP3[(work >> 16) & 0x3fL]; - fval |= SP1[(work >> 24) & 0x3fL]; - work = right ^ *keys++; - fval |= SP8[ work & 0x3fL]; - fval |= SP6[(work >> 8) & 0x3fL]; - fval |= SP4[(work >> 16) & 0x3fL]; - fval |= SP2[(work >> 24) & 0x3fL]; - leftt ^= fval; - work = (leftt << 28) | (leftt >> 4); - work ^= *keys++; - fval = SP7[ work & 0x3fL]; - fval |= SP5[(work >> 8) & 0x3fL]; - fval |= SP3[(work >> 16) & 0x3fL]; - fval |= SP1[(work >> 24) & 0x3fL]; - work = leftt ^ *keys++; - fval |= SP8[ work & 0x3fL]; - fval |= SP6[(work >> 8) & 0x3fL]; - fval |= SP4[(work >> 16) & 0x3fL]; - fval |= SP2[(work >> 24) & 0x3fL]; - right ^= fval; - } - - right = (right << 31) | (right >> 1); - work = (leftt ^ right) & 0xaaaaaaaaL; - leftt ^= work; - right ^= work; - leftt = (leftt << 31) | (leftt >> 1); - work = ((leftt >> 8) ^ right) & 0x00ff00ffL; - right ^= work; - leftt ^= (work << 8); - work = ((leftt >> 2) ^ right) & 0x33333333L; - right ^= work; - leftt ^= (work << 2); - work = ((right >> 16) ^ leftt) & 0x0000ffffL; - leftt ^= work; - right ^= (work << 16); - work = ((right >> 4) ^ leftt) & 0x0f0f0f0fL; - leftt ^= work; - right ^= (work << 4); - *block++ = right; - *block = leftt; - return; - } - -/* Validation sets: - * - * Single-length key, single-length plaintext - - * Key : 0123 4567 89ab cdef - * Plain : 0123 4567 89ab cde7 - * Cipher : c957 4425 6a5e d31d - * - * Double-length key, single-length plaintext - - * Key : 0123 4567 89ab cdef fedc ba98 7654 3210 - * Plain : 0123 4567 89ab cde7 - * Cipher : 7f1d 0a77 826b 8aff - * - * Double-length key, double-length plaintext - - * Key : 0123 4567 89ab cdef fedc ba98 7654 3210 - * Plain : 0123 4567 89ab cdef 0123 4567 89ab cdff - * Cipher : 27a0 8440 406a df60 278f 47cf 42d6 15d7 - * - * Triple-length key, single-length plaintext - - * Key : 0123 4567 89ab cdef fedc ba98 7654 3210 89ab cdef 0123 4567 - * Plain : 0123 4567 89ab cde7 - * Cipher : de0b 7c06 ae5e 0ed5 - * - * Triple-length key, double-length plaintext - - * Key : 0123 4567 89ab cdef fedc ba98 7654 3210 89ab cdef 0123 4567 - * Plain : 0123 4567 89ab cdef 0123 4567 89ab cdff - * Cipher : ad0d 1b30 ac17 cf07 0ed1 1c63 81e4 4de5 - * - * d3des V5.0a rwo 9208.07 18:44 Graven Imagery - **********************************************************************/ diff --git a/crypto/hash-gnutls.c b/crypto/hash-gnutls.c new file mode 100644 index 0000000000..17911ac5d1 --- /dev/null +++ b/crypto/hash-gnutls.c @@ -0,0 +1,104 @@ +/* + * QEMU Crypto hash algorithms + * + * Copyright (c) 2021 Red Hat, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + * + */ + +#include "qemu/osdep.h" +#include <gnutls/crypto.h> +#include "qapi/error.h" +#include "crypto/hash.h" +#include "hashpriv.h" + + +static int qcrypto_hash_alg_map[QCRYPTO_HASH_ALG__MAX] = { + [QCRYPTO_HASH_ALG_MD5] = GNUTLS_DIG_MD5, + [QCRYPTO_HASH_ALG_SHA1] = GNUTLS_DIG_SHA1, + [QCRYPTO_HASH_ALG_SHA224] = GNUTLS_DIG_SHA224, + [QCRYPTO_HASH_ALG_SHA256] = GNUTLS_DIG_SHA256, + [QCRYPTO_HASH_ALG_SHA384] = GNUTLS_DIG_SHA384, + [QCRYPTO_HASH_ALG_SHA512] = GNUTLS_DIG_SHA512, + [QCRYPTO_HASH_ALG_RIPEMD160] = GNUTLS_DIG_RMD160, +}; + +gboolean qcrypto_hash_supports(QCryptoHashAlgorithm alg) +{ + size_t i; + const gnutls_digest_algorithm_t *algs; + if (alg >= G_N_ELEMENTS(qcrypto_hash_alg_map) || + qcrypto_hash_alg_map[alg] == GNUTLS_DIG_UNKNOWN) { + return false; + } + algs = gnutls_digest_list(); + for (i = 0; algs[i] != GNUTLS_DIG_UNKNOWN; i++) { + if (algs[i] == qcrypto_hash_alg_map[alg]) { + return true; + } + } + return false; +} + + +static int +qcrypto_gnutls_hash_bytesv(QCryptoHashAlgorithm alg, + const struct iovec *iov, + size_t niov, + uint8_t **result, + size_t *resultlen, + Error **errp) +{ + int i, ret; + gnutls_hash_hd_t hash; + + if (!qcrypto_hash_supports(alg)) { + error_setg(errp, + "Unknown hash algorithm %d", + alg); + return -1; + } + + ret = gnutls_hash_get_len(qcrypto_hash_alg_map[alg]); + if (*resultlen == 0) { + *resultlen = ret; + *result = g_new0(uint8_t, *resultlen); + } else if (*resultlen != ret) { + error_setg(errp, + "Result buffer size %zu is smaller than hash %d", + *resultlen, ret); + return -1; + } + + ret = gnutls_hash_init(&hash, qcrypto_hash_alg_map[alg]); + if (ret < 0) { + error_setg(errp, + "Unable to initialize hash algorithm: %s", + gnutls_strerror(ret)); + return -1; + } + + for (i = 0; i < niov; i++) { + gnutls_hash(hash, iov[i].iov_base, iov[i].iov_len); + } + + gnutls_hash_deinit(hash, *result); + return 0; +} + + +QCryptoHashDriver qcrypto_hash_lib_driver = { + .hash_bytesv = qcrypto_gnutls_hash_bytesv, +}; diff --git a/crypto/hmac-gnutls.c b/crypto/hmac-gnutls.c new file mode 100644 index 0000000000..24db383322 --- /dev/null +++ b/crypto/hmac-gnutls.c @@ -0,0 +1,139 @@ +/* + * QEMU Crypto hmac algorithms + * + * Copyright (c) 2021 Red Hat, Inc. + * + * Derived from hmac-gcrypt.c: + * + * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * (at your option) any later version. See the COPYING file in the + * top-level directory. + * + */ + +#include "qemu/osdep.h" +#include <gnutls/crypto.h> + +#include "qapi/error.h" +#include "crypto/hmac.h" +#include "hmacpriv.h" + +static int qcrypto_hmac_alg_map[QCRYPTO_HASH_ALG__MAX] = { + [QCRYPTO_HASH_ALG_MD5] = GNUTLS_MAC_MD5, + [QCRYPTO_HASH_ALG_SHA1] = GNUTLS_MAC_SHA1, + [QCRYPTO_HASH_ALG_SHA224] = GNUTLS_MAC_SHA224, + [QCRYPTO_HASH_ALG_SHA256] = GNUTLS_MAC_SHA256, + [QCRYPTO_HASH_ALG_SHA384] = GNUTLS_MAC_SHA384, + [QCRYPTO_HASH_ALG_SHA512] = GNUTLS_MAC_SHA512, + [QCRYPTO_HASH_ALG_RIPEMD160] = GNUTLS_MAC_RMD160, +}; + +typedef struct QCryptoHmacGnutls QCryptoHmacGnutls; +struct QCryptoHmacGnutls { + gnutls_hmac_hd_t handle; +}; + +bool qcrypto_hmac_supports(QCryptoHashAlgorithm alg) +{ + size_t i; + const gnutls_digest_algorithm_t *algs; + if (alg >= G_N_ELEMENTS(qcrypto_hmac_alg_map) || + qcrypto_hmac_alg_map[alg] == GNUTLS_DIG_UNKNOWN) { + return false; + } + algs = gnutls_digest_list(); + for (i = 0; algs[i] != GNUTLS_DIG_UNKNOWN; i++) { + if (algs[i] == qcrypto_hmac_alg_map[alg]) { + return true; + } + } + return false; +} + +void *qcrypto_hmac_ctx_new(QCryptoHashAlgorithm alg, + const uint8_t *key, size_t nkey, + Error **errp) +{ + QCryptoHmacGnutls *ctx; + int err; + + if (!qcrypto_hmac_supports(alg)) { + error_setg(errp, "Unsupported hmac algorithm %s", + QCryptoHashAlgorithm_str(alg)); + return NULL; + } + + ctx = g_new0(QCryptoHmacGnutls, 1); + + err = gnutls_hmac_init(&ctx->handle, + qcrypto_hmac_alg_map[alg], + (const void *)key, nkey); + if (err != 0) { + error_setg(errp, "Cannot initialize hmac: %s", + gnutls_strerror(err)); + goto error; + } + + return ctx; + +error: + g_free(ctx); + return NULL; +} + +static void +qcrypto_gnutls_hmac_ctx_free(QCryptoHmac *hmac) +{ + QCryptoHmacGnutls *ctx; + + ctx = hmac->opaque; + gnutls_hmac_deinit(ctx->handle, NULL); + + g_free(ctx); +} + +static int +qcrypto_gnutls_hmac_bytesv(QCryptoHmac *hmac, + const struct iovec *iov, + size_t niov, + uint8_t **result, + size_t *resultlen, + Error **errp) +{ + QCryptoHmacGnutls *ctx; + uint32_t ret; + int i; + + ctx = hmac->opaque; + + for (i = 0; i < niov; i++) { + gnutls_hmac(ctx->handle, iov[i].iov_base, iov[i].iov_len); + } + + ret = gnutls_hmac_get_len(qcrypto_hmac_alg_map[hmac->alg]); + if (ret <= 0) { + error_setg(errp, "Unable to get hmac length: %s", + gnutls_strerror(ret)); + return -1; + } + + if (*resultlen == 0) { + *resultlen = ret; + *result = g_new0(uint8_t, *resultlen); + } else if (*resultlen != ret) { + error_setg(errp, "Result buffer size %zu is smaller than hmac %d", + *resultlen, ret); + return -1; + } + + gnutls_hmac_output(ctx->handle, *result); + + return 0; +} + +QCryptoHmacDriver qcrypto_hmac_lib_driver = { + .hmac_bytesv = qcrypto_gnutls_hmac_bytesv, + .hmac_free = qcrypto_gnutls_hmac_ctx_free, +}; diff --git a/crypto/init.c b/crypto/init.c index ea233b9192..fb7f1bff10 100644 --- a/crypto/init.c +++ b/crypto/init.c @@ -35,21 +35,6 @@ #include "crypto/random.h" /* #define DEBUG_GNUTLS */ - -/* - * We need to init gcrypt threading if - * - * - gcrypt < 1.6.0 - * - */ - -#if (defined(CONFIG_GCRYPT) && \ - (GCRYPT_VERSION_NUMBER < 0x010600)) -#define QCRYPTO_INIT_GCRYPT_THREADS -#else -#undef QCRYPTO_INIT_GCRYPT_THREADS -#endif - #ifdef DEBUG_GNUTLS static void qcrypto_gnutls_log(int level, const char *str) { @@ -57,55 +42,8 @@ static void qcrypto_gnutls_log(int level, const char *str) } #endif -#ifdef QCRYPTO_INIT_GCRYPT_THREADS -static int qcrypto_gcrypt_mutex_init(void **priv) -{ \ - QemuMutex *lock = NULL; - lock = g_new0(QemuMutex, 1); - qemu_mutex_init(lock); - *priv = lock; - return 0; -} - -static int qcrypto_gcrypt_mutex_destroy(void **priv) -{ - QemuMutex *lock = *priv; - qemu_mutex_destroy(lock); - g_free(lock); - return 0; -} - -static int qcrypto_gcrypt_mutex_lock(void **priv) -{ - QemuMutex *lock = *priv; - qemu_mutex_lock(lock); - return 0; -} - -static int qcrypto_gcrypt_mutex_unlock(void **priv) -{ - QemuMutex *lock = *priv; - qemu_mutex_unlock(lock); - return 0; -} - -static struct gcry_thread_cbs qcrypto_gcrypt_thread_impl = { - (GCRY_THREAD_OPTION_PTHREAD | (GCRY_THREAD_OPTION_VERSION << 8)), - NULL, - qcrypto_gcrypt_mutex_init, - qcrypto_gcrypt_mutex_destroy, - qcrypto_gcrypt_mutex_lock, - qcrypto_gcrypt_mutex_unlock, - NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL -}; -#endif /* QCRYPTO_INIT_GCRYPT */ - int qcrypto_init(Error **errp) { -#ifdef QCRYPTO_INIT_GCRYPT_THREADS - gcry_control(GCRYCTL_SET_THREAD_CBS, &qcrypto_gcrypt_thread_impl); -#endif /* QCRYPTO_INIT_GCRYPT_THREADS */ - #ifdef CONFIG_GNUTLS int ret; ret = gnutls_global_init(); diff --git a/crypto/meson.build b/crypto/meson.build index 7cbf1a6ba7..95a6a83504 100644 --- a/crypto/meson.build +++ b/crypto/meson.build @@ -5,7 +5,6 @@ crypto_ss.add(files( 'block-qcow.c', 'block.c', 'cipher.c', - 'desrfb.c', 'hash.c', 'hmac.c', 'ivgen-essiv.c', @@ -24,14 +23,16 @@ crypto_ss.add(files( if nettle.found() crypto_ss.add(nettle, files('hash-nettle.c', 'hmac-nettle.c', 'pbkdf-nettle.c')) + if xts == 'private' + crypto_ss.add(files('xts.c')) + endif elif gcrypt.found() crypto_ss.add(gcrypt, files('hash-gcrypt.c', 'hmac-gcrypt.c', 'pbkdf-gcrypt.c')) +elif gnutls_crypto.found() + crypto_ss.add(gnutls, files('hash-gnutls.c', 'hmac-gnutls.c', 'pbkdf-gnutls.c')) else crypto_ss.add(files('hash-glib.c', 'hmac-glib.c', 'pbkdf-stub.c')) endif -if xts == 'private' - crypto_ss.add(files('xts.c')) -endif crypto_ss.add(when: 'CONFIG_SECRET_KEYRING', if_true: files('secret_keyring.c')) crypto_ss.add(when: 'CONFIG_AF_ALG', if_true: files('afalg.c', 'cipher-afalg.c', 'hash-afalg.c')) @@ -39,6 +40,9 @@ crypto_ss.add(when: gnutls, if_true: files('tls-cipher-suites.c')) util_ss.add(files('aes.c')) util_ss.add(files('init.c')) +if gnutls.found() + util_ss.add(gnutls) +endif if gcrypt.found() util_ss.add(gcrypt, files('random-gcrypt.c')) diff --git a/crypto/pbkdf-gnutls.c b/crypto/pbkdf-gnutls.c new file mode 100644 index 0000000000..2dfbbd382c --- /dev/null +++ b/crypto/pbkdf-gnutls.c @@ -0,0 +1,90 @@ +/* + * QEMU Crypto PBKDF support (Password-Based Key Derivation Function) + * + * Copyright (c) 2021 Red Hat, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + * + */ + +#include "qemu/osdep.h" +#include <gnutls/crypto.h> +#include "qapi/error.h" +#include "crypto/pbkdf.h" + +bool qcrypto_pbkdf2_supports(QCryptoHashAlgorithm hash) +{ + switch (hash) { + case QCRYPTO_HASH_ALG_MD5: + case QCRYPTO_HASH_ALG_SHA1: + case QCRYPTO_HASH_ALG_SHA224: + case QCRYPTO_HASH_ALG_SHA256: + case QCRYPTO_HASH_ALG_SHA384: + case QCRYPTO_HASH_ALG_SHA512: + case QCRYPTO_HASH_ALG_RIPEMD160: + return true; + default: + return false; + } +} + +int qcrypto_pbkdf2(QCryptoHashAlgorithm hash, + const uint8_t *key, size_t nkey, + const uint8_t *salt, size_t nsalt, + uint64_t iterations, + uint8_t *out, size_t nout, + Error **errp) +{ + static const int hash_map[QCRYPTO_HASH_ALG__MAX] = { + [QCRYPTO_HASH_ALG_MD5] = GNUTLS_DIG_MD5, + [QCRYPTO_HASH_ALG_SHA1] = GNUTLS_DIG_SHA1, + [QCRYPTO_HASH_ALG_SHA224] = GNUTLS_DIG_SHA224, + [QCRYPTO_HASH_ALG_SHA256] = GNUTLS_DIG_SHA256, + [QCRYPTO_HASH_ALG_SHA384] = GNUTLS_DIG_SHA384, + [QCRYPTO_HASH_ALG_SHA512] = GNUTLS_DIG_SHA512, + [QCRYPTO_HASH_ALG_RIPEMD160] = GNUTLS_DIG_RMD160, + }; + int ret; + const gnutls_datum_t gkey = { (unsigned char *)key, nkey }; + const gnutls_datum_t gsalt = { (unsigned char *)salt, nsalt }; + + if (iterations > ULONG_MAX) { + error_setg_errno(errp, ERANGE, + "PBKDF iterations %llu must be less than %lu", + (long long unsigned)iterations, ULONG_MAX); + return -1; + } + + if (hash >= G_N_ELEMENTS(hash_map) || + hash_map[hash] == GNUTLS_DIG_UNKNOWN) { + error_setg_errno(errp, ENOSYS, + "PBKDF does not support hash algorithm %s", + QCryptoHashAlgorithm_str(hash)); + return -1; + } + + ret = gnutls_pbkdf2(hash_map[hash], + &gkey, + &gsalt, + iterations, + out, + nout); + if (ret != 0) { + error_setg(errp, "Cannot derive password: %s", + gnutls_strerror(ret)); + return -1; + } + + return 0; +} |