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crypto: ccree - enable CTS support in AES-XTS
In XTS encryption/decryption the plaintext byte size can be >= AES_BLOCK_SIZE. This patch enable the AES-XTS ciphertext stealing implementation in ccree driver. Signed-off-by: Uri Shir <uri.shir@arm.com> Acked-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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1 changed files with 6 additions and 10 deletions
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@ -116,10 +116,6 @@ static int validate_data_size(struct cc_cipher_ctx *ctx_p,
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case S_DIN_to_AES:
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switch (ctx_p->cipher_mode) {
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case DRV_CIPHER_XTS:
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if (size >= AES_BLOCK_SIZE &&
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IS_ALIGNED(size, AES_BLOCK_SIZE))
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return 0;
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break;
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case DRV_CIPHER_CBC_CTS:
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if (size >= AES_BLOCK_SIZE)
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return 0;
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@ -938,7 +934,7 @@ static const struct cc_alg_template skcipher_algs[] = {
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{
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.name = "xts(paes)",
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.driver_name = "xts-paes-ccree",
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.blocksize = AES_BLOCK_SIZE,
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.blocksize = 1,
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.template_skcipher = {
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.setkey = cc_cipher_sethkey,
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.encrypt = cc_cipher_encrypt,
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@ -956,7 +952,7 @@ static const struct cc_alg_template skcipher_algs[] = {
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{
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.name = "xts512(paes)",
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.driver_name = "xts-paes-du512-ccree",
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.blocksize = AES_BLOCK_SIZE,
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.blocksize = 1,
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.template_skcipher = {
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.setkey = cc_cipher_sethkey,
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.encrypt = cc_cipher_encrypt,
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@ -975,7 +971,7 @@ static const struct cc_alg_template skcipher_algs[] = {
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{
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.name = "xts4096(paes)",
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.driver_name = "xts-paes-du4096-ccree",
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.blocksize = AES_BLOCK_SIZE,
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.blocksize = 1,
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.template_skcipher = {
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.setkey = cc_cipher_sethkey,
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.encrypt = cc_cipher_encrypt,
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@ -1196,7 +1192,7 @@ static const struct cc_alg_template skcipher_algs[] = {
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{
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.name = "xts(aes)",
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.driver_name = "xts-aes-ccree",
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.blocksize = AES_BLOCK_SIZE,
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.blocksize = 1,
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.template_skcipher = {
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.setkey = cc_cipher_setkey,
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.encrypt = cc_cipher_encrypt,
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@ -1213,7 +1209,7 @@ static const struct cc_alg_template skcipher_algs[] = {
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{
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.name = "xts512(aes)",
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.driver_name = "xts-aes-du512-ccree",
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.blocksize = AES_BLOCK_SIZE,
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.blocksize = 1,
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.template_skcipher = {
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.setkey = cc_cipher_setkey,
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.encrypt = cc_cipher_encrypt,
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@ -1231,7 +1227,7 @@ static const struct cc_alg_template skcipher_algs[] = {
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{
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.name = "xts4096(aes)",
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.driver_name = "xts-aes-du4096-ccree",
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.blocksize = AES_BLOCK_SIZE,
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.blocksize = 1,
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.template_skcipher = {
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.setkey = cc_cipher_setkey,
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.encrypt = cc_cipher_encrypt,
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