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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#ifndef mozilla_dom_WebCryptoCommon_h
#define mozilla_dom_WebCryptoCommon_h
// XXX Several of these dependencies could be removed by moving implementations
// to the cpp file.
#include <cstdint>
#include <cstring>
#include "js/StructuredClone.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/Assertions.h"
#include "mozilla/dom/CryptoBuffer.h"
#include "mozilla/fallible.h"
#include "nsContentUtils.h"
#include "nsLiteralString.h"
#include "nsStringFwd.h"
#include "pkcs11t.h"
#include "plarena.h"
#include "secasn1t.h"
#include "seccomon.h"
#include "secitem.h"
#include "secoid.h"
#include "secoidt.h"
#include "ScopedNSSTypes.h"
struct JSStructuredCloneReader;
struct JSStructuredCloneWriter;
// WebCrypto algorithm names
#define WEBCRYPTO_ALG_AES_CBC "AES-CBC"
#define WEBCRYPTO_ALG_AES_CTR "AES-CTR"
#define WEBCRYPTO_ALG_AES_GCM "AES-GCM"
#define WEBCRYPTO_ALG_AES_KW "AES-KW"
#define WEBCRYPTO_ALG_SHA1 "SHA-1"
#define WEBCRYPTO_ALG_SHA256 "SHA-256"
#define WEBCRYPTO_ALG_SHA384 "SHA-384"
#define WEBCRYPTO_ALG_SHA512 "SHA-512"
#define WEBCRYPTO_ALG_HMAC "HMAC"
#define WEBCRYPTO_ALG_HKDF "HKDF"
#define WEBCRYPTO_ALG_PBKDF2 "PBKDF2"
#define WEBCRYPTO_ALG_RSASSA_PKCS1 "RSASSA-PKCS1-v1_5"
#define WEBCRYPTO_ALG_RSA_OAEP "RSA-OAEP"
#define WEBCRYPTO_ALG_RSA_PSS "RSA-PSS"
#define WEBCRYPTO_ALG_ECDH "ECDH"
#define WEBCRYPTO_ALG_ECDSA "ECDSA"
// WebCrypto key formats
#define WEBCRYPTO_KEY_FORMAT_RAW "raw"
#define WEBCRYPTO_KEY_FORMAT_PKCS8 "pkcs8"
#define WEBCRYPTO_KEY_FORMAT_SPKI "spki"
#define WEBCRYPTO_KEY_FORMAT_JWK "jwk"
// WebCrypto key types
#define WEBCRYPTO_KEY_TYPE_PUBLIC "public"
#define WEBCRYPTO_KEY_TYPE_PRIVATE "private"
#define WEBCRYPTO_KEY_TYPE_SECRET "secret"
// WebCrypto key usages
#define WEBCRYPTO_KEY_USAGE_ENCRYPT "encrypt"
#define WEBCRYPTO_KEY_USAGE_DECRYPT "decrypt"
#define WEBCRYPTO_KEY_USAGE_SIGN "sign"
#define WEBCRYPTO_KEY_USAGE_VERIFY "verify"
#define WEBCRYPTO_KEY_USAGE_DERIVEKEY "deriveKey"
#define WEBCRYPTO_KEY_USAGE_DERIVEBITS "deriveBits"
#define WEBCRYPTO_KEY_USAGE_WRAPKEY "wrapKey"
#define WEBCRYPTO_KEY_USAGE_UNWRAPKEY "unwrapKey"
// WebCrypto named curves
#define WEBCRYPTO_NAMED_CURVE_P256 "P-256"
#define WEBCRYPTO_NAMED_CURVE_P384 "P-384"
#define WEBCRYPTO_NAMED_CURVE_P521 "P-521"
// JWK key types
#define JWK_TYPE_SYMMETRIC "oct"
#define JWK_TYPE_RSA "RSA"
#define JWK_TYPE_EC "EC"
// JWK algorithms
#define JWK_ALG_A128CBC "A128CBC" // CBC
#define JWK_ALG_A192CBC "A192CBC"
#define JWK_ALG_A256CBC "A256CBC"
#define JWK_ALG_A128CTR "A128CTR" // CTR
#define JWK_ALG_A192CTR "A192CTR"
#define JWK_ALG_A256CTR "A256CTR"
#define JWK_ALG_A128GCM "A128GCM" // GCM
#define JWK_ALG_A192GCM "A192GCM"
#define JWK_ALG_A256GCM "A256GCM"
#define JWK_ALG_A128KW "A128KW" // KW
#define JWK_ALG_A192KW "A192KW"
#define JWK_ALG_A256KW "A256KW"
#define JWK_ALG_HS1 "HS1" // HMAC
#define JWK_ALG_HS256 "HS256"
#define JWK_ALG_HS384 "HS384"
#define JWK_ALG_HS512 "HS512"
#define JWK_ALG_RS1 "RS1" // RSASSA-PKCS1
#define JWK_ALG_RS256 "RS256"
#define JWK_ALG_RS384 "RS384"
#define JWK_ALG_RS512 "RS512"
#define JWK_ALG_RSA_OAEP "RSA-OAEP" // RSA-OAEP
#define JWK_ALG_RSA_OAEP_256 "RSA-OAEP-256"
#define JWK_ALG_RSA_OAEP_384 "RSA-OAEP-384"
#define JWK_ALG_RSA_OAEP_512 "RSA-OAEP-512"
#define JWK_ALG_PS1 "PS1" // RSA-PSS
#define JWK_ALG_PS256 "PS256"
#define JWK_ALG_PS384 "PS384"
#define JWK_ALG_PS512 "PS512"
// The JSON Web Algorithms spec (RFC 7518) uses the hash to identify these, not
// the curve.
#define JWK_ALG_ECDSA_P_256 "ES256"
#define JWK_ALG_ECDSA_P_384 "ES384"
#define JWK_ALG_ECDSA_P_521 "ES512"
// JWK usages
#define JWK_USE_ENC "enc"
#define JWK_USE_SIG "sig"
// Define an unknown mechanism type
#define UNKNOWN_CK_MECHANISM CKM_VENDOR_DEFINED + 1
// python security/pkix/tools/DottedOIDToCode.py id-ecDH 1.3.132.112
static const uint8_t id_ecDH[] = {0x2b, 0x81, 0x04, 0x70};
const SECItem SEC_OID_DATA_EC_DH = {
siBuffer, (unsigned char*)id_ecDH,
static_cast<unsigned int>(mozilla::ArrayLength(id_ecDH))};
namespace mozilla::dom {
inline bool ReadBuffer(JSStructuredCloneReader* aReader,
CryptoBuffer& aBuffer) {
uint32_t length, zero;
bool ret = JS_ReadUint32Pair(aReader, &length, &zero);
if (!ret) {
return false;
}
if (length > 0) {
if (!aBuffer.SetLength(length, fallible)) {
return false;
}
ret = JS_ReadBytes(aReader, aBuffer.Elements(), aBuffer.Length());
}
return ret;
}
inline bool WriteBuffer(JSStructuredCloneWriter* aWriter,
const uint8_t* aBuffer, size_t aLength) {
bool ret = JS_WriteUint32Pair(aWriter, aLength, 0);
if (ret && aLength > 0) {
ret = JS_WriteBytes(aWriter, aBuffer, aLength);
}
return ret;
}
inline bool WriteBuffer(JSStructuredCloneWriter* aWriter,
const CryptoBuffer& aBuffer) {
return WriteBuffer(aWriter, aBuffer.Elements(), aBuffer.Length());
}
inline CK_MECHANISM_TYPE MapAlgorithmNameToMechanism(const nsString& aName) {
CK_MECHANISM_TYPE mechanism(UNKNOWN_CK_MECHANISM);
// Set mechanism based on algorithm name
if (aName.EqualsLiteral(WEBCRYPTO_ALG_AES_CBC)) {
mechanism = CKM_AES_CBC_PAD;
} else if (aName.EqualsLiteral(WEBCRYPTO_ALG_AES_CTR)) {
mechanism = CKM_AES_CTR;
} else if (aName.EqualsLiteral(WEBCRYPTO_ALG_AES_GCM)) {
mechanism = CKM_AES_GCM;
} else if (aName.EqualsLiteral(WEBCRYPTO_ALG_AES_KW)) {
mechanism = CKM_NSS_AES_KEY_WRAP;
} else if (aName.EqualsLiteral(WEBCRYPTO_ALG_SHA1)) {
mechanism = CKM_SHA_1;
} else if (aName.EqualsLiteral(WEBCRYPTO_ALG_SHA256)) {
mechanism = CKM_SHA256;
} else if (aName.EqualsLiteral(WEBCRYPTO_ALG_SHA384)) {
mechanism = CKM_SHA384;
} else if (aName.EqualsLiteral(WEBCRYPTO_ALG_SHA512)) {
mechanism = CKM_SHA512;
} else if (aName.EqualsLiteral(WEBCRYPTO_ALG_PBKDF2)) {
mechanism = CKM_PKCS5_PBKD2;
} else if (aName.EqualsLiteral(WEBCRYPTO_ALG_RSASSA_PKCS1)) {
mechanism = CKM_RSA_PKCS;
} else if (aName.EqualsLiteral(WEBCRYPTO_ALG_RSA_OAEP)) {
mechanism = CKM_RSA_PKCS_OAEP;
} else if (aName.EqualsLiteral(WEBCRYPTO_ALG_RSA_PSS)) {
mechanism = CKM_RSA_PKCS_PSS;
} else if (aName.EqualsLiteral(WEBCRYPTO_ALG_ECDH)) {
mechanism = CKM_ECDH1_DERIVE;
}
return mechanism;
}
#define NORMALIZED_EQUALS(aTest, aConst) \
nsContentUtils::EqualsIgnoreASCIICase( \
aTest, NS_LITERAL_STRING_FROM_CSTRING(aConst))
inline bool NormalizeToken(const nsString& aName, nsString& aDest) {
// Algorithm names
if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_AES_CBC)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_AES_CBC);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_AES_CTR)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_AES_CTR);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_AES_GCM)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_AES_GCM);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_AES_KW)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_AES_KW);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_SHA1)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_SHA1);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_SHA256)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_SHA256);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_SHA384)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_SHA384);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_SHA512)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_SHA512);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_HMAC)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_HMAC);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_HKDF)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_HKDF);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_PBKDF2)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_PBKDF2);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_RSASSA_PKCS1)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_RSASSA_PKCS1);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_RSA_OAEP)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_RSA_OAEP);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_RSA_PSS)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_RSA_PSS);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_ECDH)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_ECDH);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_ALG_ECDSA)) {
aDest.AssignLiteral(WEBCRYPTO_ALG_ECDSA);
// Named curve values
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_NAMED_CURVE_P256)) {
aDest.AssignLiteral(WEBCRYPTO_NAMED_CURVE_P256);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_NAMED_CURVE_P384)) {
aDest.AssignLiteral(WEBCRYPTO_NAMED_CURVE_P384);
} else if (NORMALIZED_EQUALS(aName, WEBCRYPTO_NAMED_CURVE_P521)) {
aDest.AssignLiteral(WEBCRYPTO_NAMED_CURVE_P521);
} else {
return false;
}
return true;
}
inline bool CheckEncodedECParameters(const SECItem* aEcParams) {
// Need at least two bytes for a valid ASN.1 encoding.
if (aEcParams->len < 2) {
return false;
}
// Check the ASN.1 tag.
if (aEcParams->data[0] != SEC_ASN1_OBJECT_ID) {
return false;
}
// OID tags are short, we never need more than one length byte.
if (aEcParams->data[1] >= 128) {
return false;
}
// Check that the SECItem's length is correct.
if (aEcParams->len != (unsigned)aEcParams->data[1] + 2) {
return false;
}
return true;
}
inline SECItem* CreateECParamsForCurve(const nsAString& aNamedCurve,
PLArenaPool* aArena) {
MOZ_ASSERT(aArena);
SECOidTag curveOIDTag;
if (aNamedCurve.EqualsLiteral(WEBCRYPTO_NAMED_CURVE_P256)) {
curveOIDTag = SEC_OID_SECG_EC_SECP256R1;
} else if (aNamedCurve.EqualsLiteral(WEBCRYPTO_NAMED_CURVE_P384)) {
curveOIDTag = SEC_OID_SECG_EC_SECP384R1;
} else if (aNamedCurve.EqualsLiteral(WEBCRYPTO_NAMED_CURVE_P521)) {
curveOIDTag = SEC_OID_SECG_EC_SECP521R1;
} else {
return nullptr;
}
// Retrieve curve data by OID tag.
SECOidData* oidData = SECOID_FindOIDByTag(curveOIDTag);
if (!oidData) {
return nullptr;
}
// Create parameters.
SECItem* params = ::SECITEM_AllocItem(aArena, nullptr, 2 + oidData->oid.len);
if (!params) {
return nullptr;
}
// Set parameters.
params->data[0] = SEC_ASN1_OBJECT_ID;
params->data[1] = oidData->oid.len;
memcpy(params->data + 2, oidData->oid.data, oidData->oid.len);
// Sanity check the params we just created.
if (!CheckEncodedECParameters(params)) {
return nullptr;
}
return params;
}
// Implemented in CryptoKey.cpp
UniqueSECKEYPublicKey CreateECPublicKey(const SECItem* aKeyData,
const nsAString& aNamedCurve);
} // namespace mozilla::dom
#endif // mozilla_dom_WebCryptoCommon_h