+static int do_EC_KEY_print(BIO *bp, const EC_KEY *x, int off, int ktype)
+ {
+ unsigned char *buffer=NULL;
+ const char *ecstr;
+ size_t buf_len=0, i;
+ int ret=0, reason=ERR_R_BIO_LIB;
+ BIGNUM *pub_key=NULL, *order=NULL;
+ BN_CTX *ctx=NULL;
+ const EC_GROUP *group;
+ const EC_POINT *public_key;
+ const BIGNUM *priv_key;
+
+ if (x == NULL || (group = EC_KEY_get0_group(x)) == NULL)
+ {
+ reason = ERR_R_PASSED_NULL_PARAMETER;
+ goto err;
+ }
+
+ ctx = BN_CTX_new();
+ if (ctx == NULL)
+ {
+ reason = ERR_R_MALLOC_FAILURE;
+ goto err;
+ }
+
+ if (ktype > 0)
+ {
+ public_key = EC_KEY_get0_public_key(x);
+ if ((pub_key = EC_POINT_point2bn(group, public_key,
+ EC_KEY_get_conv_form(x), NULL, ctx)) == NULL)
+ {
+ reason = ERR_R_EC_LIB;
+ goto err;
+ }
+ if (pub_key)
+ buf_len = (size_t)BN_num_bytes(pub_key);
+ }
+
+ if (ktype == 2)
+ {
+ priv_key = EC_KEY_get0_private_key(x);
+ if (priv_key && (i = (size_t)BN_num_bytes(priv_key)) > buf_len)
+ buf_len = i;
+ }
+ else
+ priv_key = NULL;
+
+ if (ktype > 0)
+ {
+ buf_len += 10;
+ if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
+ {
+ reason = ERR_R_MALLOC_FAILURE;
+ goto err;
+ }
+ }
+ if (ktype == 2)
+ ecstr = "Private-Key";
+ else if (ktype == 1)
+ ecstr = "Public-Key";
+ else
+ ecstr = "ECDSA-Parameters";
+
+ if (!BIO_indent(bp, off, 128))
+ goto err;
+ if ((order = BN_new()) == NULL)
+ goto err;
+ if (!EC_GROUP_get_order(group, order, NULL))
+ goto err;
+ if (BIO_printf(bp, "%s: (%d bit)\n", ecstr,
+ BN_num_bits(order)) <= 0) goto err;
+
+ if ((priv_key != NULL) && !ASN1_bn_print(bp, "priv:", priv_key,
+ buffer, off))
+ goto err;
+ if ((pub_key != NULL) && !ASN1_bn_print(bp, "pub: ", pub_key,
+ buffer, off))
+ goto err;
+ if (!ECPKParameters_print(bp, group, off))
+ goto err;
+ ret=1;
+err:
+ if (!ret)
+ ECerr(EC_F_EC_KEY_PRINT, reason);
+ if (pub_key)
+ BN_free(pub_key);
+ if (order)
+ BN_free(order);
+ if (ctx)
+ BN_CTX_free(ctx);
+ if (buffer != NULL)
+ OPENSSL_free(buffer);
+ return(ret);
+ }
+
+static int eckey_param_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+ ASN1_PCTX *ctx)
+ {
+ return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 0);
+ }
+
+static int eckey_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+ ASN1_PCTX *ctx)
+ {
+ return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 1);
+ }
+
+
+static int eckey_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+ ASN1_PCTX *ctx)
+ {
+ return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 2);
+ }
+