diff options
author | Longpeng(Mike) <longpeng2@huawei.com> | 2016-12-08 10:33:28 +0800 |
---|---|---|
committer | Daniel P. Berrange <berrange@redhat.com> | 2016-12-21 14:26:26 +0000 |
commit | ffb7bf452af8f5b50c2a9adca8ab2e54627e04ae (patch) | |
tree | 4a3ed5c4e178ee74295099cfdd582b23eaec75bd /crypto | |
parent | d4c64800bbe1332328695a551b84ae68590c90fd (diff) | |
download | qemu-ffb7bf452af8f5b50c2a9adca8ab2e54627e04ae.zip qemu-ffb7bf452af8f5b50c2a9adca8ab2e54627e04ae.tar.gz qemu-ffb7bf452af8f5b50c2a9adca8ab2e54627e04ae.tar.bz2 |
crypto: add 3des-ede support when using libgcrypt/nettle
Libgcrypt and nettle support 3des-ede, so this patch add 3des-ede
support when using libgcrypt or nettle.
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Diffstat (limited to 'crypto')
-rw-r--r-- | crypto/cipher-gcrypt.c | 6 | ||||
-rw-r--r-- | crypto/cipher-nettle.c | 37 | ||||
-rw-r--r-- | crypto/cipher.c | 7 |
3 files changed, 48 insertions, 2 deletions
diff --git a/crypto/cipher-gcrypt.c b/crypto/cipher-gcrypt.c index c550db9..6487eca 100644 --- a/crypto/cipher-gcrypt.c +++ b/crypto/cipher-gcrypt.c @@ -29,6 +29,7 @@ bool qcrypto_cipher_supports(QCryptoCipherAlgorithm alg, { switch (alg) { case QCRYPTO_CIPHER_ALG_DES_RFB: + case QCRYPTO_CIPHER_ALG_3DES: case QCRYPTO_CIPHER_ALG_AES_128: case QCRYPTO_CIPHER_ALG_AES_192: case QCRYPTO_CIPHER_ALG_AES_256: @@ -99,6 +100,10 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg, gcryalg = GCRY_CIPHER_DES; break; + case QCRYPTO_CIPHER_ALG_3DES: + gcryalg = GCRY_CIPHER_3DES; + break; + case QCRYPTO_CIPHER_ALG_AES_128: gcryalg = GCRY_CIPHER_AES128; break; @@ -200,6 +205,7 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg, case QCRYPTO_CIPHER_ALG_TWOFISH_256: ctx->blocksize = 16; break; + case QCRYPTO_CIPHER_ALG_3DES: case QCRYPTO_CIPHER_ALG_CAST5_128: ctx->blocksize = 8; break; diff --git a/crypto/cipher-nettle.c b/crypto/cipher-nettle.c index 5798910..dfc9030 100644 --- a/crypto/cipher-nettle.c +++ b/crypto/cipher-nettle.c @@ -78,6 +78,18 @@ static void des_decrypt_native(cipher_ctx_t ctx, cipher_length_t length, des_decrypt(ctx, length, dst, src); } +static void des3_encrypt_native(cipher_ctx_t ctx, cipher_length_t length, + uint8_t *dst, const uint8_t *src) +{ + des3_encrypt(ctx, length, dst, src); +} + +static void des3_decrypt_native(cipher_ctx_t ctx, cipher_length_t length, + uint8_t *dst, const uint8_t *src) +{ + des3_decrypt(ctx, length, dst, src); +} + static void cast128_encrypt_native(cipher_ctx_t ctx, cipher_length_t length, uint8_t *dst, const uint8_t *src) { @@ -140,6 +152,18 @@ static void des_decrypt_wrapper(const void *ctx, size_t length, des_decrypt(ctx, length, dst, src); } +static void des3_encrypt_wrapper(const void *ctx, size_t length, + uint8_t *dst, const uint8_t *src) +{ + des3_encrypt(ctx, length, dst, src); +} + +static void des3_decrypt_wrapper(const void *ctx, size_t length, + uint8_t *dst, const uint8_t *src) +{ + des3_decrypt(ctx, length, dst, src); +} + static void cast128_encrypt_wrapper(const void *ctx, size_t length, uint8_t *dst, const uint8_t *src) { @@ -197,6 +221,7 @@ bool qcrypto_cipher_supports(QCryptoCipherAlgorithm alg, { switch (alg) { case QCRYPTO_CIPHER_ALG_DES_RFB: + case QCRYPTO_CIPHER_ALG_3DES: case QCRYPTO_CIPHER_ALG_AES_128: case QCRYPTO_CIPHER_ALG_AES_192: case QCRYPTO_CIPHER_ALG_AES_256: @@ -271,6 +296,18 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg, ctx->blocksize = DES_BLOCK_SIZE; break; + case QCRYPTO_CIPHER_ALG_3DES: + ctx->ctx = g_new0(struct des3_ctx, 1); + des3_set_key(ctx->ctx, key); + + ctx->alg_encrypt_native = des3_encrypt_native; + ctx->alg_decrypt_native = des3_decrypt_native; + ctx->alg_encrypt_wrapper = des3_encrypt_wrapper; + ctx->alg_decrypt_wrapper = des3_decrypt_wrapper; + + ctx->blocksize = DES3_BLOCK_SIZE; + break; + case QCRYPTO_CIPHER_ALG_AES_128: case QCRYPTO_CIPHER_ALG_AES_192: case QCRYPTO_CIPHER_ALG_AES_256: diff --git a/crypto/cipher.c b/crypto/cipher.c index a9bca41..9ecaff7 100644 --- a/crypto/cipher.c +++ b/crypto/cipher.c @@ -28,6 +28,7 @@ static size_t alg_key_len[QCRYPTO_CIPHER_ALG__MAX] = { [QCRYPTO_CIPHER_ALG_AES_192] = 24, [QCRYPTO_CIPHER_ALG_AES_256] = 32, [QCRYPTO_CIPHER_ALG_DES_RFB] = 8, + [QCRYPTO_CIPHER_ALG_3DES] = 24, [QCRYPTO_CIPHER_ALG_CAST5_128] = 16, [QCRYPTO_CIPHER_ALG_SERPENT_128] = 16, [QCRYPTO_CIPHER_ALG_SERPENT_192] = 24, @@ -42,6 +43,7 @@ static size_t alg_block_len[QCRYPTO_CIPHER_ALG__MAX] = { [QCRYPTO_CIPHER_ALG_AES_192] = 16, [QCRYPTO_CIPHER_ALG_AES_256] = 16, [QCRYPTO_CIPHER_ALG_DES_RFB] = 8, + [QCRYPTO_CIPHER_ALG_3DES] = 8, [QCRYPTO_CIPHER_ALG_CAST5_128] = 8, [QCRYPTO_CIPHER_ALG_SERPENT_128] = 16, [QCRYPTO_CIPHER_ALG_SERPENT_192] = 16, @@ -107,8 +109,9 @@ qcrypto_cipher_validate_key_length(QCryptoCipherAlgorithm alg, } if (mode == QCRYPTO_CIPHER_MODE_XTS) { - if (alg == QCRYPTO_CIPHER_ALG_DES_RFB) { - error_setg(errp, "XTS mode not compatible with DES-RFB"); + if (alg == QCRYPTO_CIPHER_ALG_DES_RFB + || alg == QCRYPTO_CIPHER_ALG_3DES) { + error_setg(errp, "XTS mode not compatible with DES-RFB/3DES"); return false; } if (nkey % 2) { |