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Add support for aes-128/192/256-ctr to the cryptodev engine.

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This can be used to speed up SRTP with libsrtp, e.g. on TI omap/sitara based devices.
This commit is contained in:
Klaus-Peter Junghanns 2014-01-28 22:16:22 +01:00 committed by Dr. Stephen Henson
parent 3343220327
commit be2c4d9bd9
1 changed files with 51 additions and 0 deletions
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51
crypto/engine/eng_cryptodev.c
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@ -147,6 +147,9 @@ static struct {
{ CRYPTO_AES_CBC, NID_aes_128_cbc, 16, 16, },
{ CRYPTO_AES_CBC, NID_aes_192_cbc, 16, 24, },
{ CRYPTO_AES_CBC, NID_aes_256_cbc, 16, 32, },
{ CRYPTO_AES_CTR, NID_aes_128_ctr, 14, 16, },
{ CRYPTO_AES_CTR, NID_aes_192_ctr, 14, 24, },
{ CRYPTO_AES_CTR, NID_aes_256_ctr, 14, 32, },
{ CRYPTO_BLF_CBC, NID_bf_cbc, 8, 16, },
{ CRYPTO_CAST_CBC, NID_cast5_cbc, 8, 16, },
{ CRYPTO_SKIPJACK_CBC, NID_undef, 0, 0, },
@ -600,6 +603,45 @@ const EVP_CIPHER cryptodev_aes_256_cbc = {
NULL
};
const EVP_CIPHER cryptodev_aes_ctr = {
NID_aes_128_ctr,
16, 16, 14,
EVP_CIPH_CTR_MODE,
cryptodev_init_key,
cryptodev_cipher,
cryptodev_cleanup,
sizeof(struct dev_crypto_state),
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL
};
const EVP_CIPHER cryptodev_aes_ctr_192 = {
NID_aes_192_ctr,
16, 24, 14,
EVP_CIPH_CTR_MODE,
cryptodev_init_key,
cryptodev_cipher,
cryptodev_cleanup,
sizeof(struct dev_crypto_state),
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL
};
const EVP_CIPHER cryptodev_aes_ctr_256 = {
NID_aes_256_ctr,
16, 32, 14,
EVP_CIPH_CTR_MODE,
cryptodev_init_key,
cryptodev_cipher,
cryptodev_cleanup,
sizeof(struct dev_crypto_state),
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL
};
/*
* Registered by the ENGINE when used to find out how to deal with
* a particular NID in the ENGINE. this says what we'll do at the
@ -637,6 +679,15 @@ cryptodev_engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
case NID_aes_256_cbc:
*cipher = &cryptodev_aes_256_cbc;
break;
case NID_aes_128_ctr:
*cipher = &cryptodev_aes_ctr;
break;
case NID_aes_192_ctr:
*cipher = &cryptodev_aes_ctr_192;
break;
case NID_aes_256_ctr:
*cipher = &cryptodev_aes_ctr_256;
break;
default:
*cipher = NULL;
break;