Add KDF for DH.

[thirdparty/openssl.git] / crypto / dh / dh.h

diff --git a/crypto/dh/dh.h b/crypto/dh/dh.h
index 53f9f2656684fe0fc80d2db9884c07ccfe47c149..a86c64db014f327ef3f337d89d3555ae7f48b124 100644 (file)
--- a/crypto/dh/dh.h
+++ b/crypto/dh/dh.h
@@ -239,6 +239,13 @@ DH *DH_get_1024_160(void);
 DH *DH_get_2048_224(void);
 DH *DH_get_2048_256(void);
 
+/* RFC2631 KDF */
+int DH_KDF_X9_42(unsigned char *out, size_t outlen, 
+               const unsigned char *Z, size_t Zlen,
+               ASN1_OBJECT *key_oid,
+               const unsigned char *ukm, size_t ukmlen,
+               const EVP_MD *md);
+
 #define EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, len) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_PARAMGEN, \
                        EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN, len, NULL)