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authorSean Parkinson <sean@wolfssl.com>2017-10-16 05:45:09 (GMT)
committerJouni Malinen <j@w1.fi>2017-12-24 15:35:38 (GMT)
commit23ff5d73dfbc8267c239e0d210d19249fbd0f2ce (patch)
tree8d02412e225ce758e7525c097aa1e97272d0fbb7
parent441e8bfbb4b0684b2bd446bfe1906b5968ac5000 (diff)
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Enhance crypto abstract API
Add more crypto_*() wrappers to enable use of other crypto libraries than OpenSSL. Signed-off-by: Sean Parkinson <sean@wolfssl.com>
-rw-r--r--src/crypto/crypto.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/crypto/crypto.h b/src/crypto/crypto.h
index 2659cd9..507b7ca 100644
--- a/src/crypto/crypto.h
+++ b/src/crypto/crypto.h
@@ -417,6 +417,13 @@ int __must_check crypto_public_key_decrypt_pkcs1(
struct crypto_public_key *key, const u8 *crypt, size_t crypt_len,
u8 *plain, size_t *plain_len);
+int crypto_dh_init(u8 generator, const u8 *prime, size_t prime_len, u8 *privkey,
+ u8 *pubkey);
+int crypto_dh_derive_secret(u8 generator, const u8 *prime, size_t prime_len,
+ const u8 *privkey, size_t privkey_len,
+ const u8 *pubkey, size_t pubkey_len,
+ u8 *secret, size_t *len);
+
/**
* crypto_global_init - Initialize crypto wrapper
*
@@ -529,6 +536,14 @@ int crypto_bignum_to_bin(const struct crypto_bignum *a,
u8 *buf, size_t buflen, size_t padlen);
/**
+ * crypto_bignum_rand - Create a random number in range of modulus
+ * @r: Bignum; set to a random value
+ * @m: Bignum; modulus
+ * Returns: 0 on success, -1 on failure
+ */
+int crypto_bignum_rand(struct crypto_bignum *r, const struct crypto_bignum *m);
+
+/**
* crypto_bignum_add - c = a + b
* @a: Bignum
* @b: Bignum
@@ -610,6 +625,16 @@ int crypto_bignum_mulmod(const struct crypto_bignum *a,
struct crypto_bignum *d);
/**
+ * crypto_bignum_rshift - r = a >> n
+ * @a: Bignum
+ * @n: Number of bits
+ * @r: Bignum; used to store the result of a >> n
+ * Returns: 0 on success, -1 on failure
+ */
+int crypto_bignum_rshift(const struct crypto_bignum *a, int n,
+ struct crypto_bignum *r);
+
+/**
* crypto_bignum_cmp - Compare two bignums
* @a: Bignum
* @b: Bignum
@@ -640,6 +665,13 @@ int crypto_bignum_is_zero(const struct crypto_bignum *a);
int crypto_bignum_is_one(const struct crypto_bignum *a);
/**
+ * crypto_bignum_is_odd - Is the given bignum odd
+ * @a: Bignum
+ * Returns: 1 if @a is odd or 0 if not
+ */
+int crypto_bignum_is_odd(const struct crypto_bignum *a);
+
+/**
* crypto_bignum_legendre - Compute the Legendre symbol (a/p)
* @a: Bignum
* @p: Bignum
@@ -671,6 +703,14 @@ struct crypto_ec * crypto_ec_init(int group);
void crypto_ec_deinit(struct crypto_ec *e);
/**
+ * crypto_ec_cofactor - Set the cofactor into the big number
+ * @e: EC context from crypto_ec_init()
+ * @cofactor: Cofactor of curve.
+ * Returns: 0 on success, -1 on failure
+ */
+int crypto_ec_cofactor(struct crypto_ec *e, struct crypto_bignum *cofactor);
+
+/**
* crypto_ec_prime_len - Get length of the prime in octets
* @e: EC context from crypto_ec_init()
* Returns: Length of the prime defining the group
@@ -685,6 +725,13 @@ size_t crypto_ec_prime_len(struct crypto_ec *e);
size_t crypto_ec_prime_len_bits(struct crypto_ec *e);
/**
+ * crypto_ec_order_len - Get length of the order in octets
+ * @e: EC context from crypto_ec_init()
+ * Returns: Length of the order defining the group
+ */
+size_t crypto_ec_order_len(struct crypto_ec *e);
+
+/**
* crypto_ec_get_prime - Get prime defining an EC group
* @e: EC context from crypto_ec_init()
* Returns: Prime (bignum) defining the group
@@ -721,6 +768,16 @@ struct crypto_ec_point * crypto_ec_point_init(struct crypto_ec *e);
void crypto_ec_point_deinit(struct crypto_ec_point *p, int clear);
/**
+ * crypto_ec_point_x - Copies the x-ordinate point into big number
+ * @e: EC context from crypto_ec_init()
+ * @p: EC point data
+ * @x: Big number to set to the copy of x-ordinate
+ * Returns: 0 on success, -1 on failure
+ */
+int crypto_ec_point_x(struct crypto_ec *e, const struct crypto_ec_point *p,
+ struct crypto_bignum *x);
+
+/**
* crypto_ec_point_to_bin - Write EC point value as binary data
* @e: EC context from crypto_ec_init()
* @p: EC point data from crypto_ec_point_init()