diff options
Diffstat (limited to 'libparc/parc/security/parc_Pkcs12KeyStore.c')
| -rw-r--r-- | libparc/parc/security/parc_Pkcs12KeyStore.c | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/libparc/parc/security/parc_Pkcs12KeyStore.c b/libparc/parc/security/parc_Pkcs12KeyStore.c new file mode 100644 index 00000000..4b9693b5 --- /dev/null +++ b/libparc/parc/security/parc_Pkcs12KeyStore.c @@ -0,0 +1,372 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/** + */ + +#include <config.h> +#include <stdio.h> +#include <errno.h> +#include <string.h> +#include <fcntl.h> +#include <unistd.h> + +#include <LongBow/runtime.h> +#include <LongBow/longBow_Compiler.h> + +#include <parc/algol/parc_Object.h> + +#include <parc/security/parc_Security.h> +#include <parc/security/parc_Signer.h> +#include <parc/security/parc_KeyStore.h> +#include <parc/algol/parc_Memory.h> + +#include <parc/security/parc_Certificate.h> +#include <parc/security/parc_CertificateFactory.h> +#include <parc/security/parc_CertificateType.h> +#include <parc/security/parc_ContainerEncoding.h> + +#include <parc/security/parc_Pkcs12KeyStore.h> + +#include <openssl/pkcs12.h> +#include <openssl/x509v3.h> +#include <openssl/err.h> + +struct parc_pkcs12_keystore { + EVP_PKEY *private_key; + EVP_PKEY *public_key; + X509 *x509_cert; + + // These will be 0 length until asked for + PARCBuffer *public_key_digest; + PARCBuffer *certificate_digest; + PARCBuffer *public_key_der; + PARCBuffer *certificate_der; + PARCBuffer *private_key_der; + + PARCCryptoHashType hashType; + PARCCryptoHasher *hasher; +}; + +static bool +_parcPkcs12KeyStore_Finalize(PARCPkcs12KeyStore **instancePtr) +{ + assertNotNull(instancePtr, "Parameter must be a non-null pointer to a PARCPublicKeySigner pointer."); + PARCPkcs12KeyStore *keystore = *instancePtr; + + EVP_PKEY_free(keystore->private_key); + EVP_PKEY_free(keystore->public_key); + X509_free(keystore->x509_cert); + + if (keystore->public_key_digest != NULL) { + parcBuffer_Release(&keystore->public_key_digest); + } + if (keystore->certificate_digest != NULL) { + parcBuffer_Release(&keystore->certificate_digest); + } + if (keystore->public_key_der != NULL) { + parcBuffer_Release(&keystore->public_key_der); + } + if (keystore->certificate_der != NULL) { + parcBuffer_Release(&keystore->certificate_der); + } + if (keystore->private_key_der != NULL) { + parcBuffer_Release(&keystore->private_key_der); + } + + parcCryptoHasher_Release(&(keystore->hasher)); + + return true; +} + +parcObject_ImplementAcquire(parcPkcs12KeyStore, PARCPkcs12KeyStore); +parcObject_ImplementRelease(parcPkcs12KeyStore, PARCPkcs12KeyStore); +parcObject_Override(PARCPkcs12KeyStore, PARCObject, + .destructor = (PARCObjectDestructor *) _parcPkcs12KeyStore_Finalize); + +static int +_parcPkcs12KeyStore_ParseFile(PARCPkcs12KeyStore *keystore, const char *filename, const char *password) +{ + parcSecurity_AssertIsInitialized(); + + FILE *fp = fopen(filename, "rb"); + + assertNotNull(fp, "Error opening %s: %s", filename, strerror(errno)); + if (fp == NULL) { + return -1; + } + + PKCS12 *p12Keystore = NULL; + d2i_PKCS12_fp(fp, &p12Keystore); + fclose(fp); + + int success = PKCS12_parse(p12Keystore, password, &keystore->private_key, &keystore->x509_cert, NULL); + PKCS12_free(p12Keystore); + + if (!success) { + unsigned long errcode; + while ((errcode = ERR_get_error()) != 0) { + fprintf(stderr, "openssl error: %s\n", ERR_error_string(errcode, NULL)); + } + return -1; + } + + keystore->public_key = X509_get_pubkey(keystore->x509_cert); + return 0; +} + +// ============================================================= +LONGBOW_STOP_DEPRECATED_WARNINGS +// ============================================================= + +bool +parcPkcs12KeyStore_CreateFile( + const char *filename, + const char *password, + const char *subjectName, + unsigned keyLength, + unsigned validityDays) +{ + parcSecurity_AssertIsInitialized(); + + bool result = false; + + PARCCertificateFactory *factory = parcCertificateFactory_Create(PARCCertificateType_X509, PARCContainerEncoding_DER); + + PARCBuffer *privateKeyBuffer; + PARCCertificate *certificate = parcCertificateFactory_CreateSelfSignedCertificate(factory, &privateKeyBuffer, (char *) subjectName, keyLength, validityDays); + + parcCertificateFactory_Release(&factory); + + if (certificate != NULL) { + // construct the full PKCS12 keystore to hold the certificate and private key + + // Extract the private key + EVP_PKEY *privateKey = NULL; + uint8_t *privateKeyBytes = parcBuffer_Overlay(privateKeyBuffer, parcBuffer_Limit(privateKeyBuffer)); + d2i_PrivateKey(EVP_PKEY_RSA, &privateKey, (const unsigned char **) &privateKeyBytes, parcBuffer_Limit(privateKeyBuffer)); + parcBuffer_Release(&privateKeyBuffer); + + // Extract the certificate + PARCBuffer *certBuffer = parcCertificate_GetDEREncodedCertificate(certificate); + uint8_t *certBytes = parcBuffer_Overlay(certBuffer, parcBuffer_Limit(certBuffer)); + X509 *cert = NULL; + d2i_X509(&cert, (const unsigned char **) &certBytes, parcBuffer_Limit(certBuffer)); + + parcCertificate_Release(&certificate); + + PKCS12 *pkcs12 = PKCS12_create((char *) password, + "ccnxuser", + privateKey, + cert, + NULL, + 0, + 0, + 0 /*default iter*/, + PKCS12_DEFAULT_ITER /*mac_iter*/, + 0); + + if (pkcs12 != NULL) { + int fd = open(filename, O_CREAT | O_WRONLY | O_TRUNC, 0600); + if (fd != -1) { + FILE *fp = fdopen(fd, "wb"); + if (fp != NULL) { + i2d_PKCS12_fp(fp, pkcs12); + fclose(fp); + result = true; + } else { + trapUnrecoverableState("Cannot fdopen(3) the file descriptor %d", fd); + } + close(fd); + } else { + trapUnrecoverableState("Cannot open(2) the file '%s': %s", filename, strerror(errno)); + } + PKCS12_free(pkcs12); + X509_free(cert); + EVP_PKEY_free(privateKey); + } else { + unsigned long errcode; + while ((errcode = ERR_get_error()) != 0) { + fprintf(stderr, "openssl error: %s\n", ERR_error_string(errcode, NULL)); + } + trapUnrecoverableState("PKCS12_create returned a NULL value."); + } + } + + return result; +} + +PARCPkcs12KeyStore * +parcPkcs12KeyStore_Open(const char *filename, const char *password, PARCCryptoHashType hashType) +{ + PARCPkcs12KeyStore *keyStore = parcObject_CreateAndClearInstance(PARCPkcs12KeyStore); + if (keyStore != NULL) { + keyStore->hasher = parcCryptoHasher_Create(hashType); + keyStore->public_key_digest = NULL; + keyStore->certificate_digest = NULL; + keyStore->public_key_der = NULL; + keyStore->certificate_der = NULL; + keyStore->hashType = hashType; + + if (_parcPkcs12KeyStore_ParseFile(keyStore, filename, password) != 0) { + parcPkcs12KeyStore_Release(&keyStore); + } + } + + return keyStore; +} + + +static PARCCryptoHash * +_GetPublickKeyDigest(PARCPkcs12KeyStore *keystore) +{ + parcSecurity_AssertIsInitialized(); + + assertNotNull(keystore, "Parameter must be non-null PARCPkcs12KeyStore"); + + if (keystore->public_key_digest == NULL) { + AUTHORITY_KEYID *akid = X509_get_ext_d2i(keystore->x509_cert, NID_authority_key_identifier, NULL, NULL); + if (akid != NULL) { + ASN1_OCTET_STRING *skid = X509_get_ext_d2i(keystore->x509_cert, NID_subject_key_identifier, NULL, NULL); + if (skid != NULL) { + keystore->public_key_digest = + parcBuffer_PutArray(parcBuffer_Allocate(skid->length), skid->length, skid->data); + parcBuffer_Flip(keystore->public_key_digest); + ASN1_OCTET_STRING_free(skid); + } + AUTHORITY_KEYID_free(akid); + } + } + + // If we could not load the digest from the certificate, then calculate it from the public key. + if (keystore->public_key_digest == NULL) { + uint8_t digestBuffer[SHA256_DIGEST_LENGTH]; + + int result = ASN1_item_digest(ASN1_ITEM_rptr(X509_PUBKEY), + EVP_sha256(), + X509_get_X509_PUBKEY(keystore->x509_cert), + digestBuffer, + NULL); + if (result != 1) { + assertTrue(0, "Could not compute digest over certificate public key"); + } else { + keystore->public_key_digest = + parcBuffer_PutArray(parcBuffer_Allocate(SHA256_DIGEST_LENGTH), SHA256_DIGEST_LENGTH, digestBuffer); + parcBuffer_Flip(keystore->public_key_digest); + } + } + + // This stores a reference, so keystore->public_key_digest will remain valid + // even if the cryptoHasher is destroyed + return parcCryptoHash_Create(PARCCryptoHashType_SHA256, keystore->public_key_digest); +} + +static PARCCryptoHash * +_GetCertificateDigest(PARCPkcs12KeyStore *keystore) +{ + parcSecurity_AssertIsInitialized(); + + assertNotNull(keystore, "Parameter must be non-null PARCPkcs12KeyStore"); + + if (keystore->certificate_digest == NULL) { + uint8_t digestBuffer[SHA256_DIGEST_LENGTH]; + int result = X509_digest(keystore->x509_cert, EVP_sha256(), digestBuffer, NULL); + if (result) { + keystore->certificate_digest = + parcBuffer_Flip(parcBuffer_PutArray(parcBuffer_Allocate(SHA256_DIGEST_LENGTH), SHA256_DIGEST_LENGTH, digestBuffer)); + } + } + + PARCCryptoHash *hash = parcCryptoHash_Create(PARCCryptoHashType_SHA256, keystore->certificate_digest); + return hash; +} + +static PARCBuffer * +_GetDEREncodedCertificate(PARCPkcs12KeyStore *keystore) +{ + parcSecurity_AssertIsInitialized(); + + assertNotNull(keystore, "Parameter must be non-null PARCPkcs12KeyStore"); + + if (keystore->certificate_der == NULL) { + uint8_t *der = NULL; + + // this allocates memory for der + int derLength = i2d_X509(keystore->x509_cert, &der); + if (derLength > 0) { + keystore->certificate_der = + parcBuffer_Flip(parcBuffer_PutArray(parcBuffer_Allocate(derLength), derLength, der)); + } + OPENSSL_free(der); + } + + return parcBuffer_Copy(keystore->certificate_der); +} + +static PARCBuffer * +_GetDEREncodedPublicKey(PARCPkcs12KeyStore *keystore) +{ + parcSecurity_AssertIsInitialized(); + + assertNotNull(keystore, "Parameter must be non-null PARCPkcs12KeyStore"); + + if (keystore->public_key_der == NULL) { + uint8_t *der = NULL; + + // this allocates memory for der + int derLength = i2d_PUBKEY(keystore->public_key, &der); + if (derLength > 0) { + keystore->public_key_der = + parcBuffer_Flip(parcBuffer_PutArray(parcBuffer_Allocate(derLength), derLength, der)); + } + OPENSSL_free(der); + } + + return parcBuffer_Copy(keystore->public_key_der); +} + +static PARCBuffer * +_GetDEREncodedPrivateKey(PARCPkcs12KeyStore *keystore) +{ + parcSecurity_AssertIsInitialized(); + + assertNotNull(keystore, "Parameter must be non-null PARCPkcs12KeyStore"); + + if (keystore->private_key_der == NULL) { + uint8_t *der = NULL; + + // this allocates memory for der + int derLength = i2d_PrivateKey(keystore->private_key, &der); + if (derLength > 0) { + keystore->private_key_der = + parcBuffer_Flip(parcBuffer_PutArray(parcBuffer_Allocate(derLength), derLength, der)); + } + OPENSSL_free(der); + } + + return parcBuffer_Copy(keystore->private_key_der); +} + +PARCKeyStoreInterface *PARCPkcs12KeyStoreAsKeyStore = &(PARCKeyStoreInterface) { + .getVerifierKeyDigest = (PARCKeyStoreGetVerifierKeyDigest *) _GetPublickKeyDigest, + .getCertificateDigest = (PARCKeyStoreGetCertificateDigest *) _GetCertificateDigest, + .getDEREncodedCertificate = (PARCKeyStoreGetDEREncodedCertificate *) _GetDEREncodedCertificate, + .getDEREncodedPublicKey = (PARCKeyStoreGetDEREncodedPublicKey *) _GetDEREncodedPublicKey, + .getDEREncodedPrivateKey = (PARCKeyStoreGetDEREncodedPrivateKey *) _GetDEREncodedPrivateKey, +}; + +// ============================================================= +LONGBOW_START_DEPRECATED_WARNINGS +// ============================================================= |