aboutsummaryrefslogtreecommitdiff
path: root/src/key.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/key.cpp')
-rw-r--r--src/key.cpp183
1 files changed, 3 insertions, 180 deletions
diff --git a/src/key.cpp b/src/key.cpp
index c466e84f26..1b539d073a 100644
--- a/src/key.cpp
+++ b/src/key.cpp
@@ -5,6 +5,8 @@
#include "key.h"
#include "crypto/sha2.h"
+#include "eccryptoverify.h"
+#include "pubkey.h"
#include "random.h"
#ifdef USE_SECP256K1
@@ -30,60 +32,10 @@ public:
static CSecp256k1Init instance_of_csecp256k1;
#endif
-
-int CompareBigEndian(const unsigned char *c1, size_t c1len, const unsigned char *c2, size_t c2len) {
- while (c1len > c2len) {
- if (*c1)
- return 1;
- c1++;
- c1len--;
- }
- while (c2len > c1len) {
- if (*c2)
- return -1;
- c2++;
- c2len--;
- }
- while (c1len > 0) {
- if (*c1 > *c2)
- return 1;
- if (*c2 > *c1)
- return -1;
- c1++;
- c2++;
- c1len--;
- }
- return 0;
-}
-
-/** Order of secp256k1's generator minus 1. */
-const unsigned char vchMaxModOrder[32] = {
- 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
- 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFE,
- 0xBA,0xAE,0xDC,0xE6,0xAF,0x48,0xA0,0x3B,
- 0xBF,0xD2,0x5E,0x8C,0xD0,0x36,0x41,0x40
-};
-
-/** Half of the order of secp256k1's generator minus 1. */
-const unsigned char vchMaxModHalfOrder[32] = {
- 0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
- 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
- 0x5D,0x57,0x6E,0x73,0x57,0xA4,0x50,0x1D,
- 0xDF,0xE9,0x2F,0x46,0x68,0x1B,0x20,0xA0
-};
-
-const unsigned char vchZero[1] = {0};
-
} // anon namespace
bool CKey::Check(const unsigned char *vch) {
- return CompareBigEndian(vch, 32, vchZero, 0) > 0 &&
- CompareBigEndian(vch, 32, vchMaxModOrder, 32) <= 0;
-}
-
-bool CKey::CheckSignatureElement(const unsigned char *vch, int len, bool half) {
- return CompareBigEndian(vch, len, vchZero, 0) > 0 &&
- CompareBigEndian(vch, len, half ? vchMaxModHalfOrder : vchMaxModOrder, 32) <= 0;
+ return eccrypto::Check(vch);
}
void CKey::MakeNewKey(bool fCompressedIn) {
@@ -216,88 +168,6 @@ bool CKey::Load(CPrivKey &privkey, CPubKey &vchPubKey, bool fSkipCheck=false) {
return true;
}
-bool CPubKey::Verify(const uint256 &hash, const std::vector<unsigned char>& vchSig) const {
- if (!IsValid())
- return false;
-#ifdef USE_SECP256K1
- if (secp256k1_ecdsa_verify((const unsigned char*)&hash, 32, &vchSig[0], vchSig.size(), begin(), size()) != 1)
- return false;
-#else
- CECKey key;
- if (!key.SetPubKey(begin(), size()))
- return false;
- if (!key.Verify(hash, vchSig))
- return false;
-#endif
- return true;
-}
-
-bool CPubKey::RecoverCompact(const uint256 &hash, const std::vector<unsigned char>& vchSig) {
- if (vchSig.size() != 65)
- return false;
- int recid = (vchSig[0] - 27) & 3;
- bool fComp = ((vchSig[0] - 27) & 4) != 0;
-#ifdef USE_SECP256K1
- int pubkeylen = 65;
- if (!secp256k1_ecdsa_recover_compact((const unsigned char*)&hash, 32, &vchSig[1], (unsigned char*)begin(), &pubkeylen, fComp, recid))
- return false;
- assert((int)size() == pubkeylen);
-#else
- CECKey key;
- if (!key.Recover(hash, &vchSig[1], recid))
- return false;
- std::vector<unsigned char> pubkey;
- key.GetPubKey(pubkey, fComp);
- Set(pubkey.begin(), pubkey.end());
-#endif
- return true;
-}
-
-bool CPubKey::IsFullyValid() const {
- if (!IsValid())
- return false;
-#ifdef USE_SECP256K1
- if (!secp256k1_ecdsa_pubkey_verify(begin(), size()))
- return false;
-#else
- CECKey key;
- if (!key.SetPubKey(begin(), size()))
- return false;
-#endif
- return true;
-}
-
-bool CPubKey::Decompress() {
- if (!IsValid())
- return false;
-#ifdef USE_SECP256K1
- int clen = size();
- int ret = secp256k1_ecdsa_pubkey_decompress((unsigned char*)begin(), &clen);
- assert(ret);
- assert(clen == (int)size());
-#else
- CECKey key;
- if (!key.SetPubKey(begin(), size()))
- return false;
- std::vector<unsigned char> pubkey;
- key.GetPubKey(pubkey, false);
- Set(pubkey.begin(), pubkey.end());
-#endif
- return true;
-}
-
-void static BIP32Hash(const unsigned char chainCode[32], unsigned int nChild, unsigned char header, const unsigned char data[32], unsigned char output[64]) {
- unsigned char num[4];
- num[0] = (nChild >> 24) & 0xFF;
- num[1] = (nChild >> 16) & 0xFF;
- num[2] = (nChild >> 8) & 0xFF;
- num[3] = (nChild >> 0) & 0xFF;
- CHMAC_SHA512(chainCode, 32).Write(&header, 1)
- .Write(data, 32)
- .Write(num, 4)
- .Finalize(output);
-}
-
bool CKey::Derive(CKey& keyChild, unsigned char ccChild[32], unsigned int nChild, const unsigned char cc[32]) const {
assert(IsValid());
assert(IsCompressed());
@@ -324,27 +194,6 @@ bool CKey::Derive(CKey& keyChild, unsigned char ccChild[32], unsigned int nChild
return ret;
}
-bool CPubKey::Derive(CPubKey& pubkeyChild, unsigned char ccChild[32], unsigned int nChild, const unsigned char cc[32]) const {
- assert(IsValid());
- assert((nChild >> 31) == 0);
- assert(begin() + 33 == end());
- unsigned char out[64];
- BIP32Hash(cc, nChild, *begin(), begin()+1, out);
- memcpy(ccChild, out+32, 32);
-#ifdef USE_SECP256K1
- pubkeyChild = *this;
- bool ret = secp256k1_ecdsa_pubkey_tweak_add((unsigned char*)pubkeyChild.begin(), pubkeyChild.size(), out);
-#else
- CECKey key;
- bool ret = key.SetPubKey(begin(), size());
- ret &= key.TweakPublic(out);
- std::vector<unsigned char> pubkey;
- key.GetPubKey(pubkey, true);
- pubkeyChild.Set(pubkey.begin(), pubkey.end());
-#endif
- return ret;
-}
-
bool CExtKey::Derive(CExtKey &out, unsigned int nChild) const {
out.nDepth = nDepth + 1;
CKeyID id = key.GetPubKey().GetID();
@@ -395,32 +244,6 @@ void CExtKey::Decode(const unsigned char code[74]) {
key.Set(code+42, code+74, true);
}
-void CExtPubKey::Encode(unsigned char code[74]) const {
- code[0] = nDepth;
- memcpy(code+1, vchFingerprint, 4);
- code[5] = (nChild >> 24) & 0xFF; code[6] = (nChild >> 16) & 0xFF;
- code[7] = (nChild >> 8) & 0xFF; code[8] = (nChild >> 0) & 0xFF;
- memcpy(code+9, vchChainCode, 32);
- assert(pubkey.size() == 33);
- memcpy(code+41, pubkey.begin(), 33);
-}
-
-void CExtPubKey::Decode(const unsigned char code[74]) {
- nDepth = code[0];
- memcpy(vchFingerprint, code+1, 4);
- nChild = (code[5] << 24) | (code[6] << 16) | (code[7] << 8) | code[8];
- memcpy(vchChainCode, code+9, 32);
- pubkey.Set(code+41, code+74);
-}
-
-bool CExtPubKey::Derive(CExtPubKey &out, unsigned int nChild) const {
- out.nDepth = nDepth + 1;
- CKeyID id = pubkey.GetID();
- memcpy(&out.vchFingerprint[0], &id, 4);
- out.nChild = nChild;
- return pubkey.Derive(out.pubkey, out.vchChainCode, nChild, vchChainCode);
-}
-
bool ECC_InitSanityCheck() {
#ifdef USE_SECP256K1
return true;
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-07 15:35:12 +0000