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Unified Diff: content/child/webcrypto/nss/rsa_key_nss.cc

Issue 401983002: Revert 284192 due to a failing test. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 6 years, 5 months ago
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Index: content/child/webcrypto/nss/rsa_key_nss.cc
diff --git a/content/child/webcrypto/nss/rsa_key_nss.cc b/content/child/webcrypto/nss/rsa_key_nss.cc
deleted file mode 100644
index ec1630089e451f4735e93867e92efde85ef78f61..0000000000000000000000000000000000000000
--- a/content/child/webcrypto/nss/rsa_key_nss.cc
+++ /dev/null
@@ -1,897 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "content/child/webcrypto/nss/rsa_key_nss.h"
-
-#include "base/logging.h"
-#include "content/child/webcrypto/crypto_data.h"
-#include "content/child/webcrypto/jwk.h"
-#include "content/child/webcrypto/nss/key_nss.h"
-#include "content/child/webcrypto/nss/util_nss.h"
-#include "content/child/webcrypto/status.h"
-#include "content/child/webcrypto/webcrypto_util.h"
-#include "crypto/scoped_nss_types.h"
-#include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
-#include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h"
-
-namespace content {
-
-namespace webcrypto {
-
-namespace {
-
-// Converts a (big-endian) WebCrypto BigInteger, with or without leading zeros,
-// to unsigned long.
-bool BigIntegerToLong(const uint8* data,
- unsigned int data_size,
- unsigned long* result) {
- // TODO(eroman): Fix handling of empty biginteger. http://crubg.com/373552
- if (data_size == 0)
- return false;
-
- *result = 0;
- for (size_t i = 0; i < data_size; ++i) {
- size_t reverse_i = data_size - i - 1;
-
- if (reverse_i >= sizeof(unsigned long) && data[i])
- return false; // Too large for a long.
-
- *result |= data[i] << 8 * reverse_i;
- }
- return true;
-}
-
-bool CreatePublicKeyAlgorithm(const blink::WebCryptoAlgorithm& algorithm,
- SECKEYPublicKey* key,
- blink::WebCryptoKeyAlgorithm* key_algorithm) {
- // TODO(eroman): What about other key types rsaPss, rsaOaep.
- if (!key || key->keyType != rsaKey)
- return false;
-
- unsigned int modulus_length_bits = SECKEY_PublicKeyStrength(key) * 8;
- CryptoData public_exponent(key->u.rsa.publicExponent.data,
- key->u.rsa.publicExponent.len);
-
- switch (algorithm.paramsType()) {
- case blink::WebCryptoAlgorithmParamsTypeRsaHashedImportParams:
- case blink::WebCryptoAlgorithmParamsTypeRsaHashedKeyGenParams:
- *key_algorithm = blink::WebCryptoKeyAlgorithm::createRsaHashed(
- algorithm.id(),
- modulus_length_bits,
- public_exponent.bytes(),
- public_exponent.byte_length(),
- GetInnerHashAlgorithm(algorithm).id());
- return true;
- default:
- return false;
- }
-}
-
-bool CreatePrivateKeyAlgorithm(const blink::WebCryptoAlgorithm& algorithm,
- SECKEYPrivateKey* key,
- blink::WebCryptoKeyAlgorithm* key_algorithm) {
- crypto::ScopedSECKEYPublicKey public_key(SECKEY_ConvertToPublicKey(key));
- return CreatePublicKeyAlgorithm(algorithm, public_key.get(), key_algorithm);
-}
-
-#if defined(USE_NSS) && !defined(OS_CHROMEOS)
-Status ErrorRsaKeyImportNotSupported() {
- return Status::ErrorUnsupported(
- "NSS version must be at least 3.16.2 for RSA key import. See "
- "http://crbug.com/380424");
-}
-
-// Prior to NSS 3.16.2 RSA key parameters were not validated. This is
-// a security problem for RSA private key import from JWK which uses a
-// CKA_ID based on the public modulus to retrieve the private key.
-Status NssSupportsRsaKeyImport() {
- if (!NSS_VersionCheck("3.16.2"))
- return ErrorRsaKeyImportNotSupported();
-
- // Also ensure that the version of Softoken is 3.16.2 or later.
- crypto::ScopedPK11Slot slot(PK11_GetInternalSlot());
- CK_SLOT_INFO info = {};
- if (PK11_GetSlotInfo(slot.get(), &info) != SECSuccess)
- return ErrorRsaKeyImportNotSupported();
-
- // CK_SLOT_INFO.hardwareVersion contains the major.minor
- // version info for Softoken in the corresponding .major/.minor
- // fields, and .firmwareVersion contains the patch.build
- // version info (in the .major/.minor fields)
- if ((info.hardwareVersion.major > 3) ||
- (info.hardwareVersion.major == 3 &&
- (info.hardwareVersion.minor > 16 ||
- (info.hardwareVersion.minor == 16 &&
- info.firmwareVersion.major >= 2)))) {
- return Status::Success();
- }
-
- return ErrorRsaKeyImportNotSupported();
-}
-#else
-Status NssSupportsRsaKeyImport() {
- return Status::Success();
-}
-#endif
-
-bool CreateRsaHashedPublicKeyAlgorithm(
- const blink::WebCryptoAlgorithm& algorithm,
- SECKEYPublicKey* key,
- blink::WebCryptoKeyAlgorithm* key_algorithm) {
- // TODO(eroman): What about other key types rsaPss, rsaOaep.
- if (!key || key->keyType != rsaKey)
- return false;
-
- unsigned int modulus_length_bits = SECKEY_PublicKeyStrength(key) * 8;
- CryptoData public_exponent(key->u.rsa.publicExponent.data,
- key->u.rsa.publicExponent.len);
-
- switch (algorithm.paramsType()) {
- case blink::WebCryptoAlgorithmParamsTypeRsaHashedImportParams:
- case blink::WebCryptoAlgorithmParamsTypeRsaHashedKeyGenParams:
- *key_algorithm = blink::WebCryptoKeyAlgorithm::createRsaHashed(
- algorithm.id(),
- modulus_length_bits,
- public_exponent.bytes(),
- public_exponent.byte_length(),
- GetInnerHashAlgorithm(algorithm).id());
- return true;
- default:
- return false;
- }
-}
-
-bool CreateRsaHashedPrivateKeyAlgorithm(
- const blink::WebCryptoAlgorithm& algorithm,
- SECKEYPrivateKey* key,
- blink::WebCryptoKeyAlgorithm* key_algorithm) {
- crypto::ScopedSECKEYPublicKey public_key(SECKEY_ConvertToPublicKey(key));
- if (!public_key)
- return false;
- return CreateRsaHashedPublicKeyAlgorithm(
- algorithm, public_key.get(), key_algorithm);
-}
-
-// From PKCS#1 [http://tools.ietf.org/html/rfc3447]:
-//
-// RSAPrivateKey ::= SEQUENCE {
-// version Version,
-// modulus INTEGER, -- n
-// publicExponent INTEGER, -- e
-// privateExponent INTEGER, -- d
-// prime1 INTEGER, -- p
-// prime2 INTEGER, -- q
-// exponent1 INTEGER, -- d mod (p-1)
-// exponent2 INTEGER, -- d mod (q-1)
-// coefficient INTEGER, -- (inverse of q) mod p
-// otherPrimeInfos OtherPrimeInfos OPTIONAL
-// }
-//
-// Note that otherPrimeInfos is only applicable for version=1. Since NSS
-// doesn't use multi-prime can safely use version=0.
-struct RSAPrivateKey {
- SECItem version;
- SECItem modulus;
- SECItem public_exponent;
- SECItem private_exponent;
- SECItem prime1;
- SECItem prime2;
- SECItem exponent1;
- SECItem exponent2;
- SECItem coefficient;
-};
-
-// The system NSS library doesn't have the new PK11_ExportDERPrivateKeyInfo
-// function yet (https://bugzilla.mozilla.org/show_bug.cgi?id=519255). So we
-// provide a fallback implementation.
-#if defined(USE_NSS)
-const SEC_ASN1Template RSAPrivateKeyTemplate[] = {
- {SEC_ASN1_SEQUENCE, 0, NULL, sizeof(RSAPrivateKey)},
- {SEC_ASN1_INTEGER, offsetof(RSAPrivateKey, version)},
- {SEC_ASN1_INTEGER, offsetof(RSAPrivateKey, modulus)},
- {SEC_ASN1_INTEGER, offsetof(RSAPrivateKey, public_exponent)},
- {SEC_ASN1_INTEGER, offsetof(RSAPrivateKey, private_exponent)},
- {SEC_ASN1_INTEGER, offsetof(RSAPrivateKey, prime1)},
- {SEC_ASN1_INTEGER, offsetof(RSAPrivateKey, prime2)},
- {SEC_ASN1_INTEGER, offsetof(RSAPrivateKey, exponent1)},
- {SEC_ASN1_INTEGER, offsetof(RSAPrivateKey, exponent2)},
- {SEC_ASN1_INTEGER, offsetof(RSAPrivateKey, coefficient)},
- {0}};
-#endif // defined(USE_NSS)
-
-// On success |value| will be filled with data which must be freed by
-// SECITEM_FreeItem(value, PR_FALSE);
-bool ReadUint(SECKEYPrivateKey* key,
- CK_ATTRIBUTE_TYPE attribute,
- SECItem* value) {
- SECStatus rv = PK11_ReadRawAttribute(PK11_TypePrivKey, key, attribute, value);
-
- // PK11_ReadRawAttribute() returns items of type siBuffer. However in order
- // for the ASN.1 encoding to be correct, the items must be of type
- // siUnsignedInteger.
- value->type = siUnsignedInteger;
-
- return rv == SECSuccess;
-}
-
-// Fills |out| with the RSA private key properties. Returns true on success.
-// Regardless of the return value, the caller must invoke FreeRSAPrivateKey()
-// to free up any allocated memory.
-//
-// The passed in RSAPrivateKey must be zero-initialized.
-bool InitRSAPrivateKey(SECKEYPrivateKey* key, RSAPrivateKey* out) {
- if (key->keyType != rsaKey)
- return false;
-
- // Everything should be zero-ed out. These are just some spot checks.
- DCHECK(!out->version.data);
- DCHECK(!out->version.len);
- DCHECK(!out->modulus.data);
- DCHECK(!out->modulus.len);
-
- // Always use version=0 since not using multi-prime.
- if (!SEC_ASN1EncodeInteger(NULL, &out->version, 0))
- return false;
-
- if (!ReadUint(key, CKA_MODULUS, &out->modulus))
- return false;
- if (!ReadUint(key, CKA_PUBLIC_EXPONENT, &out->public_exponent))
- return false;
- if (!ReadUint(key, CKA_PRIVATE_EXPONENT, &out->private_exponent))
- return false;
- if (!ReadUint(key, CKA_PRIME_1, &out->prime1))
- return false;
- if (!ReadUint(key, CKA_PRIME_2, &out->prime2))
- return false;
- if (!ReadUint(key, CKA_EXPONENT_1, &out->exponent1))
- return false;
- if (!ReadUint(key, CKA_EXPONENT_2, &out->exponent2))
- return false;
- if (!ReadUint(key, CKA_COEFFICIENT, &out->coefficient))
- return false;
-
- return true;
-}
-
-struct FreeRsaPrivateKey {
- void operator()(RSAPrivateKey* out) {
- SECITEM_FreeItem(&out->version, PR_FALSE);
- SECITEM_FreeItem(&out->modulus, PR_FALSE);
- SECITEM_FreeItem(&out->public_exponent, PR_FALSE);
- SECITEM_FreeItem(&out->private_exponent, PR_FALSE);
- SECITEM_FreeItem(&out->prime1, PR_FALSE);
- SECITEM_FreeItem(&out->prime2, PR_FALSE);
- SECITEM_FreeItem(&out->exponent1, PR_FALSE);
- SECITEM_FreeItem(&out->exponent2, PR_FALSE);
- SECITEM_FreeItem(&out->coefficient, PR_FALSE);
- }
-};
-
-typedef scoped_ptr<CERTSubjectPublicKeyInfo,
- crypto::NSSDestroyer<CERTSubjectPublicKeyInfo,
- SECKEY_DestroySubjectPublicKeyInfo> >
- ScopedCERTSubjectPublicKeyInfo;
-
-struct DestroyGenericObject {
- void operator()(PK11GenericObject* o) const {
- if (o)
- PK11_DestroyGenericObject(o);
- }
-};
-
-typedef scoped_ptr<PK11GenericObject, DestroyGenericObject>
- ScopedPK11GenericObject;
-
-// Helper to add an attribute to a template.
-void AddAttribute(CK_ATTRIBUTE_TYPE type,
- void* value,
- unsigned long length,
- std::vector<CK_ATTRIBUTE>* templ) {
- CK_ATTRIBUTE attribute = {type, value, length};
- templ->push_back(attribute);
-}
-
-// Helper to optionally add an attribute to a template, if the provided data is
-// non-empty.
-void AddOptionalAttribute(CK_ATTRIBUTE_TYPE type,
- const CryptoData& data,
- std::vector<CK_ATTRIBUTE>* templ) {
- if (!data.byte_length())
- return;
- CK_ATTRIBUTE attribute = {type, const_cast<unsigned char*>(data.bytes()),
- data.byte_length()};
- templ->push_back(attribute);
-}
-
-void AddOptionalAttribute(CK_ATTRIBUTE_TYPE type,
- const std::string& data,
- std::vector<CK_ATTRIBUTE>* templ) {
- AddOptionalAttribute(type, CryptoData(data), templ);
-}
-
-Status ExportKeyPkcs8Nss(SECKEYPrivateKey* key, std::vector<uint8>* buffer) {
- if (key->keyType != rsaKey)
- return Status::ErrorUnsupported();
-
-// TODO(rsleevi): Implement OAEP support according to the spec.
-
-#if defined(USE_NSS)
- // PK11_ExportDERPrivateKeyInfo isn't available. Use our fallback code.
- const SECOidTag algorithm = SEC_OID_PKCS1_RSA_ENCRYPTION;
- const int kPrivateKeyInfoVersion = 0;
-
- SECKEYPrivateKeyInfo private_key_info = {};
- RSAPrivateKey rsa_private_key = {};
- scoped_ptr<RSAPrivateKey, FreeRsaPrivateKey> free_private_key(
- &rsa_private_key);
-
- // http://crbug.com/366427: the spec does not define any other failures for
- // exporting, so none of the subsequent errors are spec compliant.
- if (!InitRSAPrivateKey(key, &rsa_private_key))
- return Status::OperationError();
-
- crypto::ScopedPLArenaPool arena(PORT_NewArena(DER_DEFAULT_CHUNKSIZE));
- if (!arena.get())
- return Status::OperationError();
-
- if (!SEC_ASN1EncodeItem(arena.get(),
- &private_key_info.privateKey,
- &rsa_private_key,
- RSAPrivateKeyTemplate))
- return Status::OperationError();
-
- if (SECSuccess !=
- SECOID_SetAlgorithmID(
- arena.get(), &private_key_info.algorithm, algorithm, NULL))
- return Status::OperationError();
-
- if (!SEC_ASN1EncodeInteger(
- arena.get(), &private_key_info.version, kPrivateKeyInfoVersion))
- return Status::OperationError();
-
- crypto::ScopedSECItem encoded_key(
- SEC_ASN1EncodeItem(NULL,
- NULL,
- &private_key_info,
- SEC_ASN1_GET(SECKEY_PrivateKeyInfoTemplate)));
-#else // defined(USE_NSS)
- crypto::ScopedSECItem encoded_key(PK11_ExportDERPrivateKeyInfo(key, NULL));
-#endif // defined(USE_NSS)
-
- if (!encoded_key.get())
- return Status::OperationError();
-
- buffer->assign(encoded_key->data, encoded_key->data + encoded_key->len);
- return Status::Success();
-}
-
-Status ImportRsaPrivateKey(const blink::WebCryptoAlgorithm& algorithm,
- bool extractable,
- blink::WebCryptoKeyUsageMask usage_mask,
- const JwkRsaInfo& params,
- blink::WebCryptoKey* key) {
- Status status = NssSupportsRsaKeyImport();
- if (status.IsError())
- return status;
-
- CK_OBJECT_CLASS obj_class = CKO_PRIVATE_KEY;
- CK_KEY_TYPE key_type = CKK_RSA;
- CK_BBOOL ck_false = CK_FALSE;
-
- std::vector<CK_ATTRIBUTE> key_template;
-
- AddAttribute(CKA_CLASS, &obj_class, sizeof(obj_class), &key_template);
- AddAttribute(CKA_KEY_TYPE, &key_type, sizeof(key_type), &key_template);
- AddAttribute(CKA_TOKEN, &ck_false, sizeof(ck_false), &key_template);
- AddAttribute(CKA_SENSITIVE, &ck_false, sizeof(ck_false), &key_template);
- AddAttribute(CKA_PRIVATE, &ck_false, sizeof(ck_false), &key_template);
-
- // Required properties.
- AddOptionalAttribute(CKA_MODULUS, params.n, &key_template);
- AddOptionalAttribute(CKA_PUBLIC_EXPONENT, params.e, &key_template);
- AddOptionalAttribute(CKA_PRIVATE_EXPONENT, params.d, &key_template);
-
- // Manufacture a CKA_ID so the created key can be retrieved later as a
- // SECKEYPrivateKey using FindKeyByKeyID(). Unfortunately there isn't a more
- // direct way to do this in NSS.
- //
- // For consistency with other NSS key creation methods, set the CKA_ID to
- // PK11_MakeIDFromPubKey(). There are some problems with
- // this approach:
- //
- // (1) Prior to NSS 3.16.2, there is no parameter validation when creating
- // private keys. It is therefore possible to construct a key using the
- // known public modulus, and where all the other parameters are bogus.
- // FindKeyByKeyID() returns the first key matching the ID. So this would
- // effectively allow an attacker to retrieve a private key of their
- // choice.
- //
- // (2) The ID space is shared by different key types. So theoretically
- // possible to retrieve a key of the wrong type which has a matching
- // CKA_ID. In practice I am told this is not likely except for small key
- // sizes, since would require constructing keys with the same public
- // data.
- //
- // (3) FindKeyByKeyID() doesn't necessarily return the object that was just
- // created by CreateGenericObject. If the pre-existing key was
- // provisioned with flags incompatible with WebCrypto (for instance
- // marked sensitive) then this will break things.
- SECItem modulus_item = MakeSECItemForBuffer(CryptoData(params.n));
- crypto::ScopedSECItem object_id(PK11_MakeIDFromPubKey(&modulus_item));
- AddOptionalAttribute(
- CKA_ID, CryptoData(object_id->data, object_id->len), &key_template);
-
- // Optional properties (all of these will have been specified or none).
- AddOptionalAttribute(CKA_PRIME_1, params.p, &key_template);
- AddOptionalAttribute(CKA_PRIME_2, params.q, &key_template);
- AddOptionalAttribute(CKA_EXPONENT_1, params.dp, &key_template);
- AddOptionalAttribute(CKA_EXPONENT_2, params.dq, &key_template);
- AddOptionalAttribute(CKA_COEFFICIENT, params.qi, &key_template);
-
- crypto::ScopedPK11Slot slot(PK11_GetInternalSlot());
-
- ScopedPK11GenericObject key_object(PK11_CreateGenericObject(
- slot.get(), &key_template[0], key_template.size(), PR_FALSE));
-
- if (!key_object)
- return Status::OperationError();
-
- crypto::ScopedSECKEYPrivateKey private_key_tmp(
- PK11_FindKeyByKeyID(slot.get(), object_id.get(), NULL));
-
- // PK11_FindKeyByKeyID() may return a handle to an existing key, rather than
- // the object created by PK11_CreateGenericObject().
- crypto::ScopedSECKEYPrivateKey private_key(
- SECKEY_CopyPrivateKey(private_key_tmp.get()));
-
- if (!private_key)
- return Status::OperationError();
-
- blink::WebCryptoKeyAlgorithm key_algorithm;
- if (!CreatePrivateKeyAlgorithm(algorithm, private_key.get(), &key_algorithm))
- return Status::ErrorUnexpected();
-
- std::vector<uint8> pkcs8_data;
- status = ExportKeyPkcs8Nss(private_key.get(), &pkcs8_data);
- if (status.IsError())
- return status;
-
- scoped_ptr<PrivateKeyNss> key_handle(
- new PrivateKeyNss(private_key.Pass(), CryptoData(pkcs8_data)));
-
- *key = blink::WebCryptoKey::create(key_handle.release(),
- blink::WebCryptoKeyTypePrivate,
- extractable,
- key_algorithm,
- usage_mask);
- return Status::Success();
-}
-
-Status ExportKeySpkiNss(SECKEYPublicKey* key, std::vector<uint8>* buffer) {
- const crypto::ScopedSECItem spki_der(
- SECKEY_EncodeDERSubjectPublicKeyInfo(key));
- if (!spki_der)
- return Status::OperationError();
-
- buffer->assign(spki_der->data, spki_der->data + spki_der->len);
- return Status::Success();
-}
-
-Status ImportRsaPublicKey(const blink::WebCryptoAlgorithm& algorithm,
- bool extractable,
- blink::WebCryptoKeyUsageMask usage_mask,
- const CryptoData& modulus_data,
- const CryptoData& exponent_data,
- blink::WebCryptoKey* key) {
- if (!modulus_data.byte_length())
- return Status::ErrorImportRsaEmptyModulus();
-
- if (!exponent_data.byte_length())
- return Status::ErrorImportRsaEmptyExponent();
-
- DCHECK(modulus_data.bytes());
- DCHECK(exponent_data.bytes());
-
- // NSS does not provide a way to create an RSA public key directly from the
- // modulus and exponent values, but it can import an DER-encoded ASN.1 blob
- // with these values and create the public key from that. The code below
- // follows the recommendation described in
- // https://developer.mozilla.org/en-US/docs/NSS/NSS_Tech_Notes/nss_tech_note7
-
- // Pack the input values into a struct compatible with NSS ASN.1 encoding, and
- // set up an ASN.1 encoder template for it.
- struct RsaPublicKeyData {
- SECItem modulus;
- SECItem exponent;
- };
- const RsaPublicKeyData pubkey_in = {
- {siUnsignedInteger, const_cast<unsigned char*>(modulus_data.bytes()),
- modulus_data.byte_length()},
- {siUnsignedInteger, const_cast<unsigned char*>(exponent_data.bytes()),
- exponent_data.byte_length()}};
- const SEC_ASN1Template rsa_public_key_template[] = {
- {SEC_ASN1_SEQUENCE, 0, NULL, sizeof(RsaPublicKeyData)},
- {
- SEC_ASN1_INTEGER, offsetof(RsaPublicKeyData, modulus),
- },
- {
- SEC_ASN1_INTEGER, offsetof(RsaPublicKeyData, exponent),
- },
- {
- 0,
- }};
-
- // DER-encode the public key.
- crypto::ScopedSECItem pubkey_der(
- SEC_ASN1EncodeItem(NULL, NULL, &pubkey_in, rsa_public_key_template));
- if (!pubkey_der)
- return Status::OperationError();
-
- // Import the DER-encoded public key to create an RSA SECKEYPublicKey.
- crypto::ScopedSECKEYPublicKey pubkey(
- SECKEY_ImportDERPublicKey(pubkey_der.get(), CKK_RSA));
- if (!pubkey)
- return Status::OperationError();
-
- blink::WebCryptoKeyAlgorithm key_algorithm;
- if (!CreatePublicKeyAlgorithm(algorithm, pubkey.get(), &key_algorithm))
- return Status::ErrorUnexpected();
-
- std::vector<uint8> spki_data;
- Status status = ExportKeySpkiNss(pubkey.get(), &spki_data);
- if (status.IsError())
- return status;
-
- scoped_ptr<PublicKeyNss> key_handle(
- new PublicKeyNss(pubkey.Pass(), CryptoData(spki_data)));
-
- *key = blink::WebCryptoKey::create(key_handle.release(),
- blink::WebCryptoKeyTypePublic,
- extractable,
- key_algorithm,
- usage_mask);
- return Status::Success();
-}
-
-} // namespace
-
-Status RsaHashedAlgorithm::VerifyKeyUsagesBeforeGenerateKeyPair(
- blink::WebCryptoKeyUsageMask combined_usage_mask,
- blink::WebCryptoKeyUsageMask* public_usage_mask,
- blink::WebCryptoKeyUsageMask* private_usage_mask) const {
- Status status = CheckKeyCreationUsages(
- all_public_key_usages_ | all_private_key_usages_, combined_usage_mask);
- if (status.IsError())
- return status;
-
- *public_usage_mask = combined_usage_mask & all_public_key_usages_;
- *private_usage_mask = combined_usage_mask & all_private_key_usages_;
-
- return Status::Success();
-}
-
-Status RsaHashedAlgorithm::GenerateKeyPair(
- const blink::WebCryptoAlgorithm& algorithm,
- bool extractable,
- blink::WebCryptoKeyUsageMask public_usage_mask,
- blink::WebCryptoKeyUsageMask private_usage_mask,
- blink::WebCryptoKey* public_key,
- blink::WebCryptoKey* private_key) const {
- const blink::WebCryptoRsaHashedKeyGenParams* params =
- algorithm.rsaHashedKeyGenParams();
-
- if (!params->modulusLengthBits())
- return Status::ErrorGenerateRsaZeroModulus();
-
- unsigned long public_exponent = 0;
- if (!BigIntegerToLong(params->publicExponent().data(),
- params->publicExponent().size(),
- &public_exponent) ||
- (public_exponent != 3 && public_exponent != 65537)) {
- return Status::ErrorGenerateKeyPublicExponent();
- }
-
- crypto::ScopedPK11Slot slot(PK11_GetInternalKeySlot());
- if (!slot)
- return Status::OperationError();
-
- PK11RSAGenParams rsa_gen_params;
- // keySizeInBits is a signed type, don't pass in a negative value.
- if (params->modulusLengthBits() > INT_MAX)
- return Status::OperationError();
- rsa_gen_params.keySizeInBits = params->modulusLengthBits();
- rsa_gen_params.pe = public_exponent;
-
- const CK_FLAGS operation_flags_mask =
- CKF_ENCRYPT | CKF_DECRYPT | CKF_SIGN | CKF_VERIFY | CKF_WRAP | CKF_UNWRAP;
-
- // The private key must be marked as insensitive and extractable, otherwise it
- // cannot later be exported in unencrypted form or structured-cloned.
- const PK11AttrFlags attribute_flags =
- PK11_ATTR_INSENSITIVE | PK11_ATTR_EXTRACTABLE;
-
- // Note: NSS does not generate an sec_public_key if the call below fails,
- // so there is no danger of a leaked sec_public_key.
- SECKEYPublicKey* sec_public_key;
- crypto::ScopedSECKEYPrivateKey scoped_sec_private_key(
- PK11_GenerateKeyPairWithOpFlags(slot.get(),
- CKM_RSA_PKCS_KEY_PAIR_GEN,
- &rsa_gen_params,
- &sec_public_key,
- attribute_flags,
- generate_flags_,
- operation_flags_mask,
- NULL));
- if (!scoped_sec_private_key)
- return Status::OperationError();
-
- blink::WebCryptoKeyAlgorithm key_algorithm;
- if (!CreatePublicKeyAlgorithm(algorithm, sec_public_key, &key_algorithm))
- return Status::ErrorUnexpected();
-
- std::vector<uint8> spki_data;
- Status status = ExportKeySpkiNss(sec_public_key, &spki_data);
- if (status.IsError())
- return status;
-
- scoped_ptr<PublicKeyNss> public_key_handle(new PublicKeyNss(
- crypto::ScopedSECKEYPublicKey(sec_public_key), CryptoData(spki_data)));
-
- std::vector<uint8> pkcs8_data;
- status = ExportKeyPkcs8Nss(scoped_sec_private_key.get(), &pkcs8_data);
- if (status.IsError())
- return status;
-
- scoped_ptr<PrivateKeyNss> private_key_handle(
- new PrivateKeyNss(scoped_sec_private_key.Pass(), CryptoData(pkcs8_data)));
-
- *public_key = blink::WebCryptoKey::create(public_key_handle.release(),
- blink::WebCryptoKeyTypePublic,
- true,
- key_algorithm,
- public_usage_mask);
- *private_key = blink::WebCryptoKey::create(private_key_handle.release(),
- blink::WebCryptoKeyTypePrivate,
- extractable,
- key_algorithm,
- private_usage_mask);
-
- return Status::Success();
-}
-
-Status RsaHashedAlgorithm::VerifyKeyUsagesBeforeImportKey(
- blink::WebCryptoKeyFormat format,
- blink::WebCryptoKeyUsageMask usage_mask) const {
- switch (format) {
- case blink::WebCryptoKeyFormatSpki:
- return CheckKeyCreationUsages(all_public_key_usages_, usage_mask);
- case blink::WebCryptoKeyFormatPkcs8:
- return CheckKeyCreationUsages(all_private_key_usages_, usage_mask);
- case blink::WebCryptoKeyFormatJwk:
- return CheckKeyCreationUsages(
- all_public_key_usages_ | all_private_key_usages_, usage_mask);
- default:
- return Status::ErrorUnsupportedImportKeyFormat();
- }
-}
-
-Status RsaHashedAlgorithm::ImportKeyPkcs8(
- const CryptoData& key_data,
- const blink::WebCryptoAlgorithm& algorithm,
- bool extractable,
- blink::WebCryptoKeyUsageMask usage_mask,
- blink::WebCryptoKey* key) const {
- Status status = NssSupportsRsaKeyImport();
- if (status.IsError())
- return status;
-
- if (!key_data.byte_length())
- return Status::ErrorImportEmptyKeyData();
-
- // The binary blob 'key_data' is expected to be a DER-encoded ASN.1 PKCS#8
- // private key info object.
- SECItem pki_der = MakeSECItemForBuffer(key_data);
-
- SECKEYPrivateKey* seckey_private_key = NULL;
- crypto::ScopedPK11Slot slot(PK11_GetInternalSlot());
- if (PK11_ImportDERPrivateKeyInfoAndReturnKey(slot.get(),
- &pki_der,
- NULL, // nickname
- NULL, // publicValue
- false, // isPerm
- false, // isPrivate
- KU_ALL, // usage
- &seckey_private_key,
- NULL) != SECSuccess) {
- return Status::DataError();
- }
- DCHECK(seckey_private_key);
- crypto::ScopedSECKEYPrivateKey private_key(seckey_private_key);
-
- const KeyType sec_key_type = SECKEY_GetPrivateKeyType(private_key.get());
- if (sec_key_type != rsaKey)
- return Status::DataError();
-
- blink::WebCryptoKeyAlgorithm key_algorithm;
- if (!CreateRsaHashedPrivateKeyAlgorithm(
- algorithm, private_key.get(), &key_algorithm))
- return Status::ErrorUnexpected();
-
- // TODO(eroman): This is probably going to be the same as the input.
- std::vector<uint8> pkcs8_data;
- status = ExportKeyPkcs8Nss(private_key.get(), &pkcs8_data);
- if (status.IsError())
- return status;
-
- scoped_ptr<PrivateKeyNss> key_handle(
- new PrivateKeyNss(private_key.Pass(), CryptoData(pkcs8_data)));
-
- *key = blink::WebCryptoKey::create(key_handle.release(),
- blink::WebCryptoKeyTypePrivate,
- extractable,
- key_algorithm,
- usage_mask);
-
- return Status::Success();
-}
-
-Status RsaHashedAlgorithm::ImportKeySpki(
- const CryptoData& key_data,
- const blink::WebCryptoAlgorithm& algorithm,
- bool extractable,
- blink::WebCryptoKeyUsageMask usage_mask,
- blink::WebCryptoKey* key) const {
- Status status = NssSupportsRsaKeyImport();
- if (status.IsError())
- return status;
-
- if (!key_data.byte_length())
- return Status::ErrorImportEmptyKeyData();
-
- // The binary blob 'key_data' is expected to be a DER-encoded ASN.1 Subject
- // Public Key Info. Decode this to a CERTSubjectPublicKeyInfo.
- SECItem spki_item = MakeSECItemForBuffer(key_data);
- const ScopedCERTSubjectPublicKeyInfo spki(
- SECKEY_DecodeDERSubjectPublicKeyInfo(&spki_item));
- if (!spki)
- return Status::DataError();
-
- crypto::ScopedSECKEYPublicKey sec_public_key(
- SECKEY_ExtractPublicKey(spki.get()));
- if (!sec_public_key)
- return Status::DataError();
-
- const KeyType sec_key_type = SECKEY_GetPublicKeyType(sec_public_key.get());
- if (sec_key_type != rsaKey)
- return Status::DataError();
-
- blink::WebCryptoKeyAlgorithm key_algorithm;
- if (!CreateRsaHashedPublicKeyAlgorithm(
- algorithm, sec_public_key.get(), &key_algorithm))
- return Status::ErrorUnexpected();
-
- // TODO(eroman): This is probably going to be the same as the input.
- std::vector<uint8> spki_data;
- status = ExportKeySpkiNss(sec_public_key.get(), &spki_data);
- if (status.IsError())
- return status;
-
- scoped_ptr<PublicKeyNss> key_handle(
- new PublicKeyNss(sec_public_key.Pass(), CryptoData(spki_data)));
-
- *key = blink::WebCryptoKey::create(key_handle.release(),
- blink::WebCryptoKeyTypePublic,
- extractable,
- key_algorithm,
- usage_mask);
-
- return Status::Success();
-}
-
-Status RsaHashedAlgorithm::ExportKeyPkcs8(const blink::WebCryptoKey& key,
- std::vector<uint8>* buffer) const {
- if (key.type() != blink::WebCryptoKeyTypePrivate)
- return Status::ErrorUnexpectedKeyType();
- *buffer = PrivateKeyNss::Cast(key)->pkcs8_data();
- return Status::Success();
-}
-
-Status RsaHashedAlgorithm::ExportKeySpki(const blink::WebCryptoKey& key,
- std::vector<uint8>* buffer) const {
- if (key.type() != blink::WebCryptoKeyTypePublic)
- return Status::ErrorUnexpectedKeyType();
- *buffer = PublicKeyNss::Cast(key)->spki_data();
- return Status::Success();
-}
-
-Status RsaHashedAlgorithm::ImportKeyJwk(
- const CryptoData& key_data,
- const blink::WebCryptoAlgorithm& algorithm,
- bool extractable,
- blink::WebCryptoKeyUsageMask usage_mask,
- blink::WebCryptoKey* key) const {
- const char* jwk_algorithm =
- GetJwkAlgorithm(algorithm.rsaHashedImportParams()->hash().id());
-
- if (!jwk_algorithm)
- return Status::ErrorUnexpected();
-
- JwkRsaInfo jwk;
- Status status =
- ReadRsaKeyJwk(key_data, jwk_algorithm, extractable, usage_mask, &jwk);
- if (status.IsError())
- return status;
-
- // Once the key type is known, verify the usages.
- status = CheckKeyCreationUsages(
- jwk.is_private_key ? all_private_key_usages_ : all_public_key_usages_,
- usage_mask);
- if (status.IsError())
- return Status::ErrorCreateKeyBadUsages();
-
- return jwk.is_private_key
- ? ImportRsaPrivateKey(algorithm, extractable, usage_mask, jwk, key)
- : ImportRsaPublicKey(algorithm,
- extractable,
- usage_mask,
- CryptoData(jwk.n),
- CryptoData(jwk.e),
- key);
-}
-
-Status RsaHashedAlgorithm::ExportKeyJwk(const blink::WebCryptoKey& key,
- std::vector<uint8>* buffer) const {
- const char* jwk_algorithm =
- GetJwkAlgorithm(key.algorithm().rsaHashedParams()->hash().id());
-
- if (!jwk_algorithm)
- return Status::ErrorUnexpected();
-
- switch (key.type()) {
- case blink::WebCryptoKeyTypePublic: {
- SECKEYPublicKey* nss_key = PublicKeyNss::Cast(key)->key();
- if (nss_key->keyType != rsaKey)
- return Status::ErrorUnsupported();
-
- WriteRsaPublicKeyJwk(SECItemToCryptoData(nss_key->u.rsa.modulus),
- SECItemToCryptoData(nss_key->u.rsa.publicExponent),
- jwk_algorithm,
- key.extractable(),
- key.usages(),
- buffer);
-
- return Status::Success();
- }
-
- case blink::WebCryptoKeyTypePrivate: {
- SECKEYPrivateKey* nss_key = PrivateKeyNss::Cast(key)->key();
- RSAPrivateKey key_props = {};
- scoped_ptr<RSAPrivateKey, FreeRsaPrivateKey> free_private_key(&key_props);
-
- if (!InitRSAPrivateKey(nss_key, &key_props))
- return Status::OperationError();
-
- WriteRsaPrivateKeyJwk(SECItemToCryptoData(key_props.modulus),
- SECItemToCryptoData(key_props.public_exponent),
- SECItemToCryptoData(key_props.private_exponent),
- SECItemToCryptoData(key_props.prime1),
- SECItemToCryptoData(key_props.prime2),
- SECItemToCryptoData(key_props.exponent1),
- SECItemToCryptoData(key_props.exponent2),
- SECItemToCryptoData(key_props.coefficient),
- jwk_algorithm,
- key.extractable(),
- key.usages(),
- buffer);
-
- return Status::Success();
- }
- default:
- return Status::ErrorUnexpected();
- }
-}
-
-} // namespace webcrypto
-
-} // namespace content
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