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| author | Daniel P. Berrange <berrange@redhat.com> | 2016-02-10 17:07:42 +0000 |
|---|---|---|
| committer | Daniel P. Berrange <berrange@redhat.com> | 2016-03-17 14:41:15 +0000 |
| commit | 084a85eeddfe1ab84b861971b6efd976d2ae3d1f (patch) | |
| tree | 8419c6e40182eecd788d7d2f8db6d46f7514dbe7 /crypto/cipher-gcrypt.c | |
| parent | aa41363598735bae8d270023247da9ec0334605c (diff) | |
| download | qemu-084a85eeddfe1ab84b861971b6efd976d2ae3d1f.zip qemu-084a85eeddfe1ab84b861971b6efd976d2ae3d1f.tar.gz qemu-084a85eeddfe1ab84b861971b6efd976d2ae3d1f.tar.bz2 | |
crypto: add support for the cast5-128 cipher algorithm
A new cipher algorithm 'cast-5-128' is defined for the
Cast-5 algorithm with 128 bit key size. Smaller key sizes
are supported by Cast-5, but nothing in QEMU should use
them, so only 128 bit keys are permitted.
The nettle and gcrypt cipher backends are updated to
support the new cipher and a test vector added to the
cipher test suite. The new algorithm is enabled in the
LUKS block encryption driver.
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Diffstat (limited to 'crypto/cipher-gcrypt.c')
| -rw-r--r-- | crypto/cipher-gcrypt.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/crypto/cipher-gcrypt.c b/crypto/cipher-gcrypt.c index 56d4c9d..aa1d8c5 100644 --- a/crypto/cipher-gcrypt.c +++ b/crypto/cipher-gcrypt.c @@ -29,6 +29,7 @@ bool qcrypto_cipher_supports(QCryptoCipherAlgorithm alg) case QCRYPTO_CIPHER_ALG_AES_128: case QCRYPTO_CIPHER_ALG_AES_192: case QCRYPTO_CIPHER_ALG_AES_256: + case QCRYPTO_CIPHER_ALG_CAST5_128: return true; default: return false; @@ -84,6 +85,10 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg, gcryalg = GCRY_CIPHER_AES256; break; + case QCRYPTO_CIPHER_ALG_CAST5_128: + gcryalg = GCRY_CIPHER_CAST5; + break; + default: error_setg(errp, "Unsupported cipher algorithm %d", alg); return NULL; @@ -113,7 +118,18 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg, ctx->blocksize = 8; } else { err = gcry_cipher_setkey(ctx->handle, key, nkey); - ctx->blocksize = 16; + switch (cipher->alg) { + case QCRYPTO_CIPHER_ALG_AES_128: + case QCRYPTO_CIPHER_ALG_AES_192: + case QCRYPTO_CIPHER_ALG_AES_256: + ctx->blocksize = 16; + break; + case QCRYPTO_CIPHER_ALG_CAST5_128: + ctx->blocksize = 8; + break; + default: + g_assert_not_reached(); + } } if (err != 0) { error_setg(errp, "Cannot set key: %s", |