Commit b335b544 authored by Klaus-Peter Junghanns's avatar Klaus-Peter Junghanns Committed by Dr. Stephen Henson
Browse files

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

This can be used to speed up SRTP with libsrtp, e.g. on TI omap/sitara based devices.
(cherry picked from commit be2c4d9b)
parent a8eeedb6

crypto/engine/eng_cryptodev.c

+51 −0
Original line number Diff line number Diff line
@@ -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;