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authorSalvatore Benedetto <salvatore.benedetto@intel.com>2016-07-04 19:21:38 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2016-07-05 18:05:26 +0300
commit8be0b84e58a9b07c314f920792926c5c5a53d3da (patch)
treec75ddebfc0ea68a3cd05bc8bbf2dc2b85bdfb462
parente24860f2a6b50eb09f3a627e168433005798f8d9 (diff)
downloadlinux-8be0b84e58a9b07c314f920792926c5c5a53d3da.tar.xz
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 <salvatore.benedetto@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-rw-r--r--crypto/rsa_helper.c75
-rw-r--r--crypto/rsaprivkey.asn110
-rw-r--r--include/crypto/internal/rsa.h20
3 files changed, 100 insertions, 5 deletions
diff --git a/crypto/rsa_helper.c b/crypto/rsa_helper.c
index 583656af4fe2..4df6451e7543 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,
diff --git a/crypto/rsaprivkey.asn1 b/crypto/rsaprivkey.asn1
index 731aea5edb0c..4ce06758e8af 100644
--- a/crypto/rsaprivkey.asn1
+++ b/crypto/rsaprivkey.asn1
@@ -3,9 +3,9 @@ RsaPrivKey ::= SEQUENCE {
n INTEGER ({ rsa_get_n }),
e INTEGER ({ rsa_get_e }),
d INTEGER ({ rsa_get_d }),
- prime1 INTEGER,
- prime2 INTEGER,
- exponent1 INTEGER,
- exponent2 INTEGER,
- coefficient INTEGER
+ prime1 INTEGER ({ rsa_get_p }),
+ prime2 INTEGER ({ rsa_get_q }),
+ exponent1 INTEGER ({ rsa_get_dp }),
+ exponent2 INTEGER ({ rsa_get_dq }),
+ coefficient INTEGER ({ rsa_get_qinv })
}
diff --git a/include/crypto/internal/rsa.h b/include/crypto/internal/rsa.h
index d6c042a2ee52..9e8f1590de98 100644
--- a/include/crypto/internal/rsa.h
+++ b/include/crypto/internal/rsa.h
@@ -19,17 +19,37 @@
* @n : RSA modulus raw byte stream
* @e : RSA public exponent raw byte stream
* @d : RSA private exponent raw byte stream
+ * @p : RSA prime factor p of n raw byte stream
+ * @q : RSA prime factor q of n raw byte stream
+ * @dp : RSA exponent d mod (p - 1) raw byte stream
+ * @dq : RSA exponent d mod (q - 1) raw byte stream
+ * @qinv : RSA CRT coefficient q^(-1) mod p raw byte stream
* @n_sz : length in bytes of RSA modulus n
* @e_sz : length in bytes of RSA public exponent
* @d_sz : length in bytes of RSA private exponent
+ * @p_sz : length in bytes of p field
+ * @q_sz : length in bytes of q field
+ * @dp_sz : length in bytes of dp field
+ * @dq_sz : length in bytes of dq field
+ * @qinv_sz : length in bytes of qinv field
*/
struct rsa_key {
const u8 *n;
const u8 *e;
const u8 *d;
+ const u8 *p;
+ const u8 *q;
+ const u8 *dp;
+ const u8 *dq;
+ const u8 *qinv;
size_t n_sz;
size_t e_sz;
size_t d_sz;
+ size_t p_sz;
+ size_t q_sz;
+ size_t dp_sz;
+ size_t dq_sz;
+ size_t qinv_sz;
};
int rsa_parse_pub_key(struct rsa_key *rsa_key, const void *key,