Implement akcipher_alg->set_sig_params for rsassa-psspad to receive the salt length for the signature being verified. Signed-off-by: Varad Gautam <varad.gautam@xxxxxxxx> --- crypto/rsa-psspad.c | 20 +++++++++++++++++++- include/crypto/internal/rsa-common.h | 1 + 2 files changed, 20 insertions(+), 1 deletion(-) diff --git a/crypto/rsa-psspad.c b/crypto/rsa-psspad.c index 855e82ca071a..bb8052821982 100644 --- a/crypto/rsa-psspad.c +++ b/crypto/rsa-psspad.c @@ -9,6 +9,7 @@ #include <crypto/hash.h> #include <crypto/internal/akcipher.h> #include <crypto/internal/rsa-common.h> +#include <crypto/public_key.h> static int psspad_setup_shash(struct crypto_shash **hash_tfm, struct shash_desc **desc, const char *hash_algo) @@ -33,6 +34,22 @@ static void psspad_free_shash(struct crypto_shash *hash_tfm, struct shash_desc * crypto_free_shash(hash_tfm); } +static int psspad_set_sig_params(struct crypto_akcipher *tfm, + const void *sig, + unsigned int siglen) +{ + struct akcipher_instance *inst = akcipher_alg_instance(tfm); + struct rsapad_inst_ctx *ictx = akcipher_instance_ctx(inst); + const struct public_key_signature *s = sig; + + if (!sig) + return -EINVAL; + + ictx->salt_len = s->salt_length; + + return 0; +} + static int psspad_s_v_e_d(struct akcipher_request *req) { return -EOPNOTSUPP; @@ -48,7 +65,8 @@ static struct akcipher_alg psspad_alg = { .verify = psspad_s_v_e_d, .set_pub_key = rsapad_set_pub_key, .set_priv_key = rsapad_set_priv_key, - .max_size = rsapad_get_max_size + .max_size = rsapad_get_max_size, + .set_sig_params = psspad_set_sig_params }; static int psspad_create(struct crypto_template *tmpl, struct rtattr **tb) diff --git a/include/crypto/internal/rsa-common.h b/include/crypto/internal/rsa-common.h index 4fa3cf5a989c..84c63830577e 100644 --- a/include/crypto/internal/rsa-common.h +++ b/include/crypto/internal/rsa-common.h @@ -26,6 +26,7 @@ struct rsapad_tfm_ctx { struct rsapad_inst_ctx { struct crypto_akcipher_spawn spawn; const struct rsa_asn1_template *digest_info; + u16 salt_len; }; struct rsapad_akciper_req_ctx { -- 2.30.2