From 8be0b84e58a9b07c314f920792926c5c5a53d3da Mon Sep 17 00:00:00 2001 From: Salvatore Benedetto Date: Mon, 4 Jul 2016 17:21:38 +0100 Subject: crypto: rsa - Store rest of the private key components When parsing a private key, store all non-optional fields. These are required for enabling CRT mode for decrypt and verify Signed-off-by: Salvatore Benedetto Signed-off-by: Herbert Xu --- crypto/rsa_helper.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) (limited to 'crypto/rsa_helper.c') diff --git a/crypto/rsa_helper.c b/crypto/rsa_helper.c index 583656a..4df6451 100644 --- a/crypto/rsa_helper.c +++ b/crypto/rsa_helper.c @@ -78,6 +78,81 @@ int rsa_get_d(void *context, size_t hdrlen, unsigned char tag, return 0; } +int rsa_get_p(void *context, size_t hdrlen, unsigned char tag, + const void *value, size_t vlen) +{ + struct rsa_key *key = context; + + /* invalid key provided */ + if (!value || !vlen || vlen > key->n_sz) + return -EINVAL; + + key->p = value; + key->p_sz = vlen; + + return 0; +} + +int rsa_get_q(void *context, size_t hdrlen, unsigned char tag, + const void *value, size_t vlen) +{ + struct rsa_key *key = context; + + /* invalid key provided */ + if (!value || !vlen || vlen > key->n_sz) + return -EINVAL; + + key->q = value; + key->q_sz = vlen; + + return 0; +} + +int rsa_get_dp(void *context, size_t hdrlen, unsigned char tag, + const void *value, size_t vlen) +{ + struct rsa_key *key = context; + + /* invalid key provided */ + if (!value || !vlen || vlen > key->n_sz) + return -EINVAL; + + key->dp = value; + key->dp_sz = vlen; + + return 0; +} + +int rsa_get_dq(void *context, size_t hdrlen, unsigned char tag, + const void *value, size_t vlen) +{ + struct rsa_key *key = context; + + /* invalid key provided */ + if (!value || !vlen || vlen > key->n_sz) + return -EINVAL; + + key->dq = value; + key->dq_sz = vlen; + + return 0; +} + +int rsa_get_qinv(void *context, size_t hdrlen, unsigned char tag, + const void *value, size_t vlen) +{ + struct rsa_key *key = context; + + /* invalid key provided */ + if (!value || !vlen || vlen > key->n_sz) + return -EINVAL; + + key->qinv = value; + key->qinv_sz = vlen; + + return 0; +} + /** * rsa_parse_pub_key() - decodes the BER encoded buffer and stores in the * provided struct rsa_key, pointers to the raw key as is, -- cgit v1.1