Add KDF for DH.

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

diff --git a/crypto/dh/dh.h b/crypto/dh/dh.h
index 5e356f618b8a14508d4298a2fbb1c309094d1f4e..e59a1705a602dfc3d88cce52810c0a3e648f44df 100644 (file)
--- a/crypto/dh/dh.h
+++ b/crypto/dh/dh.h
@@ -232,6 +232,13 @@ 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)