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crypto: factor out conversion of QAPI to gcrypt constants 

The conversion of cipher mode will shortly be required in more
than one place.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2024-03-11 12:08:22 +00:00
parent 038b421788
commit eac57306d8
1 changed files with 60 additions and 56 deletions
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116
crypto/cipher-gcrypt.c.inc
View File

@ -20,6 +20,56 @@
#include <gcrypt.h>
static int qcrypto_cipher_alg_to_gcry_alg(QCryptoCipherAlgorithm alg)
{
switch (alg) {
case QCRYPTO_CIPHER_ALG_DES:
return GCRY_CIPHER_DES;
case QCRYPTO_CIPHER_ALG_3DES:
return GCRY_CIPHER_3DES;
case QCRYPTO_CIPHER_ALG_AES_128:
return GCRY_CIPHER_AES128;
case QCRYPTO_CIPHER_ALG_AES_192:
return GCRY_CIPHER_AES192;
case QCRYPTO_CIPHER_ALG_AES_256:
return GCRY_CIPHER_AES256;
case QCRYPTO_CIPHER_ALG_CAST5_128:
return GCRY_CIPHER_CAST5;
case QCRYPTO_CIPHER_ALG_SERPENT_128:
return GCRY_CIPHER_SERPENT128;
case QCRYPTO_CIPHER_ALG_SERPENT_192:
return GCRY_CIPHER_SERPENT192;
case QCRYPTO_CIPHER_ALG_SERPENT_256:
return GCRY_CIPHER_SERPENT256;
case QCRYPTO_CIPHER_ALG_TWOFISH_128:
return GCRY_CIPHER_TWOFISH128;
case QCRYPTO_CIPHER_ALG_TWOFISH_256:
return GCRY_CIPHER_TWOFISH;
#ifdef CONFIG_CRYPTO_SM4
case QCRYPTO_CIPHER_ALG_SM4:
return GCRY_CIPHER_SM4;
#endif
default:
return GCRY_CIPHER_NONE;
}
}
static int qcrypto_cipher_mode_to_gcry_mode(QCryptoCipherMode mode)
{
switch (mode) {
case QCRYPTO_CIPHER_MODE_ECB:
return GCRY_CIPHER_MODE_ECB;
case QCRYPTO_CIPHER_MODE_XTS:
return GCRY_CIPHER_MODE_XTS;
case QCRYPTO_CIPHER_MODE_CBC:
return GCRY_CIPHER_MODE_CBC;
case QCRYPTO_CIPHER_MODE_CTR:
return GCRY_CIPHER_MODE_CTR;
default:
return GCRY_CIPHER_MODE_NONE;
}
}
bool qcrypto_cipher_supports(QCryptoCipherAlgorithm alg,
QCryptoCipherMode mode)
{
@ -188,72 +238,26 @@ static QCryptoCipher *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg,
return NULL;
}
switch (alg) {
case QCRYPTO_CIPHER_ALG_DES:
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;
case QCRYPTO_CIPHER_ALG_AES_192:
gcryalg = GCRY_CIPHER_AES192;
break;
case QCRYPTO_CIPHER_ALG_AES_256:
gcryalg = GCRY_CIPHER_AES256;
break;
case QCRYPTO_CIPHER_ALG_CAST5_128:
gcryalg = GCRY_CIPHER_CAST5;
break;
case QCRYPTO_CIPHER_ALG_SERPENT_128:
gcryalg = GCRY_CIPHER_SERPENT128;
break;
case QCRYPTO_CIPHER_ALG_SERPENT_192:
gcryalg = GCRY_CIPHER_SERPENT192;
break;
case QCRYPTO_CIPHER_ALG_SERPENT_256:
gcryalg = GCRY_CIPHER_SERPENT256;
break;
case QCRYPTO_CIPHER_ALG_TWOFISH_128:
gcryalg = GCRY_CIPHER_TWOFISH128;
break;
case QCRYPTO_CIPHER_ALG_TWOFISH_256:
gcryalg = GCRY_CIPHER_TWOFISH;
break;
#ifdef CONFIG_CRYPTO_SM4
case QCRYPTO_CIPHER_ALG_SM4:
gcryalg = GCRY_CIPHER_SM4;
break;
#endif
default:
gcryalg = qcrypto_cipher_alg_to_gcry_alg(alg);
if (gcryalg == GCRY_CIPHER_NONE) {
error_setg(errp, "Unsupported cipher algorithm %s",
QCryptoCipherAlgorithm_str(alg));
return NULL;
}
drv = &qcrypto_gcrypt_driver;
switch (mode) {
case QCRYPTO_CIPHER_MODE_ECB:
gcrymode = GCRY_CIPHER_MODE_ECB;
break;
case QCRYPTO_CIPHER_MODE_XTS:
gcrymode = GCRY_CIPHER_MODE_XTS;
break;
case QCRYPTO_CIPHER_MODE_CBC:
gcrymode = GCRY_CIPHER_MODE_CBC;
break;
case QCRYPTO_CIPHER_MODE_CTR:
drv = &qcrypto_gcrypt_ctr_driver;
gcrymode = GCRY_CIPHER_MODE_CTR;
break;
default:
gcrymode = qcrypto_cipher_mode_to_gcry_mode(mode);
if (gcrymode == GCRY_CIPHER_MODE_NONE) {
error_setg(errp, "Unsupported cipher mode %s",
QCryptoCipherMode_str(mode));
return NULL;
}
if (mode == QCRYPTO_CIPHER_MODE_CTR) {
drv = &qcrypto_gcrypt_ctr_driver;
} else {
drv = &qcrypto_gcrypt_driver;
}
ctx = g_new0(QCryptoCipherGcrypt, 1);
ctx->base.driver = drv;