| /* |
| * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License 2.0 (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| #include <openssl/opensslconf.h> /* SIXTY_FOUR_BIT_LONG, ... */ |
| #include <openssl/err.h> |
| #include <openssl/pem.h> /* PEM_BUFSIZE */ |
| #include <openssl/pkcs12.h> /* PKCS8_encrypt() */ |
| #include <openssl/types.h> |
| #include <openssl/x509.h> /* i2d_X509_PUBKEY_bio() */ |
| #include "crypto/bn.h" /* bn_get_words() */ |
| #include "prov/bio.h" /* ossl_prov_bio_printf() */ |
| #include "prov/implementations.h" |
| #include "prov/providercommonerr.h" /* PROV_R_READ_KEY */ |
| #include "serializer_local.h" |
| |
| static PKCS8_PRIV_KEY_INFO * |
| ossl_prov_p8info_from_obj(const void *obj, int obj_nid, |
| ASN1_STRING *params, |
| int params_type, |
| int (*k2d)(const void *obj, |
| unsigned char **pder)) |
| { |
| /* der, derlen store the key DER output and its length */ |
| unsigned char *der = NULL; |
| int derlen; |
| /* The final PKCS#8 info */ |
| PKCS8_PRIV_KEY_INFO *p8info = NULL; |
| |
| |
| if ((p8info = PKCS8_PRIV_KEY_INFO_new()) == NULL |
| || (derlen = k2d(obj, &der)) <= 0 |
| || !PKCS8_pkey_set0(p8info, OBJ_nid2obj(obj_nid), 0, |
| params_type, params, der, derlen)) { |
| ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); |
| PKCS8_PRIV_KEY_INFO_free(p8info); |
| OPENSSL_free(der); |
| p8info = NULL; |
| } |
| |
| return p8info; |
| } |
| |
| static X509_SIG *ossl_prov_encp8_from_p8info(PKCS8_PRIV_KEY_INFO *p8info, |
| struct pkcs8_encrypt_ctx_st *ctx) |
| { |
| X509_SIG *p8 = NULL; |
| char buf[PEM_BUFSIZE]; |
| const void *kstr = ctx->cipher_pass; |
| size_t klen = ctx->cipher_pass_length; |
| |
| if (ctx->cipher == NULL) |
| return NULL; |
| |
| if (kstr == NULL) { |
| if (!ctx->cb(buf, sizeof(buf), &klen, NULL, ctx->cbarg)) { |
| ERR_raise(ERR_LIB_PROV, PROV_R_READ_KEY); |
| return NULL; |
| } |
| kstr = buf; |
| } |
| /* NID == -1 means "standard" */ |
| p8 = PKCS8_encrypt(-1, ctx->cipher, kstr, klen, NULL, 0, 0, p8info); |
| if (kstr == buf) |
| OPENSSL_cleanse(buf, klen); |
| return p8; |
| } |
| |
| static X509_SIG *ossl_prov_encp8_from_obj(const void *obj, int obj_nid, |
| ASN1_STRING *params, |
| int params_type, |
| int (*k2d)(const void *obj, |
| unsigned char **pder), |
| struct pkcs8_encrypt_ctx_st *ctx) |
| { |
| PKCS8_PRIV_KEY_INFO *p8info = |
| ossl_prov_p8info_from_obj(obj, obj_nid, params, params_type, k2d); |
| X509_SIG *p8 = ossl_prov_encp8_from_p8info(p8info, ctx); |
| |
| PKCS8_PRIV_KEY_INFO_free(p8info); |
| return p8; |
| } |
| |
| static X509_PUBKEY *ossl_prov_pubkey_from_obj(const void *obj, int obj_nid, |
| ASN1_STRING *params, |
| int params_type, |
| int (*k2d)(const void *obj, |
| unsigned char **pder)) |
| { |
| /* der, derlen store the key DER output and its length */ |
| unsigned char *der = NULL; |
| int derlen; |
| /* The final X509_PUBKEY */ |
| X509_PUBKEY *xpk = NULL; |
| |
| |
| if ((xpk = X509_PUBKEY_new()) == NULL |
| || (derlen = k2d(obj, &der)) <= 0 |
| || !X509_PUBKEY_set0_param(xpk, OBJ_nid2obj(obj_nid), |
| params_type, params, der, derlen)) { |
| ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); |
| X509_PUBKEY_free(xpk); |
| OPENSSL_free(der); |
| xpk = NULL; |
| } |
| |
| return xpk; |
| } |
| |
| OSSL_OP_keymgmt_importkey_fn *ossl_prov_get_importkey(const OSSL_DISPATCH *fns) |
| { |
| /* Pilfer the keymgmt dispatch table */ |
| for (; fns->function_id != 0; fns++) |
| if (fns->function_id == OSSL_FUNC_KEYMGMT_IMPORTKEY) |
| return OSSL_get_OP_keymgmt_importkey(fns); |
| |
| return NULL; |
| } |
| |
| # ifdef SIXTY_FOUR_BIT_LONG |
| # define BN_FMTu "%lu" |
| # define BN_FMTx "%lx" |
| # endif |
| |
| # ifdef SIXTY_FOUR_BIT |
| # define BN_FMTu "%llu" |
| # define BN_FMTx "%llx" |
| # endif |
| |
| # ifdef THIRTY_TWO_BIT |
| # define BN_FMTu "%u" |
| # define BN_FMTx "%x" |
| # endif |
| |
| int ossl_prov_print_labeled_bignum(BIO *out, const char *label, |
| const BIGNUM *n) |
| { |
| const char *neg; |
| const char *post_label_spc = " "; |
| int bytes; |
| BN_ULONG *words; |
| int i, off; |
| |
| if (n == NULL) |
| return 0; |
| if (label == NULL) { |
| label = ""; |
| post_label_spc = ""; |
| } |
| |
| bytes = BN_num_bytes(n); |
| words = bn_get_words(n); |
| neg = BN_is_negative(n) ? "-" : ""; |
| |
| if (BN_is_zero(n)) |
| return ossl_prov_bio_printf(out, "%s%s0\n", label, post_label_spc); |
| |
| if (BN_num_bytes(n) <= BN_BYTES) |
| return ossl_prov_bio_printf(out, |
| "%s%s%s" BN_FMTu " (%s0x" BN_FMTx ")\n", |
| label, post_label_spc, neg, words[0], |
| neg, words[0]); |
| |
| if (neg[0] == '-') |
| neg = " (Negative)"; |
| |
| if (ossl_prov_bio_printf(out, "%s%s\n", label, neg) <= 0) |
| return 0; |
| |
| /* Skip past the zero bytes in the first word */ |
| for (off = 0; off < BN_BYTES; off++) { |
| BN_ULONG l = words[0]; |
| int o = 8 * (BN_BYTES - off - 1); |
| int b = ((l & (0xffLU << o)) >> o) & 0xff; |
| |
| if (b != 0) |
| break; |
| } |
| /* print 16 hex digits per line, indented with 4 spaces */ |
| for (i = 0; i < bytes; i += 16) { |
| int j, step; |
| |
| if (ossl_prov_bio_printf(out, " ") <= 0) |
| return 0; |
| |
| for (j = 0; i + j < bytes && j < 16; j += BN_BYTES - step) { |
| int k; |
| BN_ULONG l = words[(i + j + off) / BN_BYTES]; |
| |
| step = (i + j + off) % BN_BYTES; |
| |
| for (k = step; k < BN_BYTES; k++) { |
| int o = 8 * (BN_BYTES - k - 1); |
| int b = ((l & (0xffLU << o)) >> o) & 0xff; |
| |
| /* We may have reached the number of bytes prematurely */ |
| if (i + j + k - off >= bytes) |
| break; |
| |
| if (ossl_prov_bio_printf(out, "%02x:", b) <= 0) |
| return 0; |
| } |
| } |
| |
| if (ossl_prov_bio_printf(out, "\n") <= 0) |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| /* p2s = param to asn1_string, k2d = key to der */ |
| int ossl_prov_write_priv_der_from_obj(BIO *out, const void *obj, int obj_nid, |
| int (*p2s)(const void *obj, int nid, |
| ASN1_STRING **str, |
| int *strtype), |
| int (*k2d)(const void *obj, |
| unsigned char **pder), |
| struct pkcs8_encrypt_ctx_st *ctx) |
| { |
| int ret = 0; |
| ASN1_STRING *str = NULL; |
| int strtype = 0; |
| |
| if (p2s != NULL && !p2s(obj, obj_nid, &str, &strtype)) |
| return 0; |
| |
| if (ctx->cipher_intent) { |
| X509_SIG *p8 = |
| ossl_prov_encp8_from_obj(obj, obj_nid, str, strtype, k2d, ctx); |
| |
| if (p8 != NULL) |
| ret = i2d_PKCS8_bio(out, p8); |
| |
| X509_SIG_free(p8); |
| } else { |
| PKCS8_PRIV_KEY_INFO *p8info = |
| ossl_prov_p8info_from_obj(obj, obj_nid, str, strtype, k2d); |
| |
| if (p8info != NULL) |
| ret = i2d_PKCS8_PRIV_KEY_INFO_bio(out, p8info); |
| |
| PKCS8_PRIV_KEY_INFO_free(p8info); |
| } |
| |
| return ret; |
| } |
| |
| int ossl_prov_write_priv_pem_from_obj(BIO *out, const void *obj, int obj_nid, |
| int (*p2s)(const void *obj, int nid, |
| ASN1_STRING **str, |
| int *strtype), |
| int (*k2d)(const void *obj, |
| unsigned char **pder), |
| struct pkcs8_encrypt_ctx_st *ctx) |
| { |
| int ret = 0; |
| ASN1_STRING *str = NULL; |
| int strtype = 0; |
| |
| if (p2s != NULL && !p2s(obj, obj_nid, &str, &strtype)) |
| return 0; |
| |
| if (ctx->cipher_intent) { |
| X509_SIG *p8 = ossl_prov_encp8_from_obj(obj, obj_nid, str, strtype, |
| k2d, ctx); |
| |
| if (p8 != NULL) |
| ret = PEM_write_bio_PKCS8(out, p8); |
| |
| X509_SIG_free(p8); |
| } else { |
| PKCS8_PRIV_KEY_INFO *p8info = |
| ossl_prov_p8info_from_obj(obj, obj_nid, str, strtype, k2d); |
| |
| if (p8info != NULL) |
| ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(out, p8info); |
| |
| PKCS8_PRIV_KEY_INFO_free(p8info); |
| } |
| |
| return ret; |
| } |
| |
| int ossl_prov_write_pub_der_from_obj(BIO *out, const void *obj, int obj_nid, |
| int (*p2s)(const void *obj, int nid, |
| ASN1_STRING **str, |
| int *strtype), |
| int (*k2d)(const void *obj, |
| unsigned char **pder)) |
| { |
| int ret = 0; |
| ASN1_STRING *str = NULL; |
| int strtype = 0; |
| X509_PUBKEY *xpk = NULL; |
| |
| if (p2s != NULL && !p2s(obj, obj_nid, &str, &strtype)) |
| return 0; |
| |
| xpk = ossl_prov_pubkey_from_obj(obj, obj_nid, str, strtype, k2d); |
| |
| if (xpk != NULL) |
| ret = i2d_X509_PUBKEY_bio(out, xpk); |
| |
| /* Also frees |str| */ |
| X509_PUBKEY_free(xpk); |
| return ret; |
| } |
| |
| int ossl_prov_write_pub_pem_from_obj(BIO *out, const void *obj, int obj_nid, |
| int (*p2s)(const void *obj, int nid, |
| ASN1_STRING **str, |
| int *strtype), |
| int (*k2d)(const void *obj, |
| unsigned char **pder)) |
| { |
| int ret = 0; |
| ASN1_STRING *str = NULL; |
| int strtype = 0; |
| X509_PUBKEY *xpk = NULL; |
| |
| if (p2s != NULL && !p2s(obj, obj_nid, &str, &strtype)) |
| return 0; |
| |
| xpk = ossl_prov_pubkey_from_obj(obj, obj_nid, str, strtype, k2d); |
| |
| if (xpk != NULL) |
| ret = PEM_write_bio_X509_PUBKEY(out, xpk); |
| |
| /* Also frees |str| */ |
| X509_PUBKEY_free(xpk); |
| return ret; |
| } |
| |
