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-rw-r--r--src/lib/hash/blake2/blake2b.cpp199
-rw-r--r--src/lib/hash/blake2/blake2b.h56
-rw-r--r--src/lib/hash/blake2/info.txt1
-rw-r--r--src/lib/hash/hash.cpp8
4 files changed, 264 insertions, 0 deletions
diff --git a/src/lib/hash/blake2/blake2b.cpp b/src/lib/hash/blake2/blake2b.cpp
new file mode 100644
index 000000000..0faafd140
--- /dev/null
+++ b/src/lib/hash/blake2/blake2b.cpp
@@ -0,0 +1,199 @@
+#include <botan/blake2b.h>
+#include <botan/exceptn.h>
+#include <botan/mem_ops.h>
+#include <botan/loadstor.h>
+#include <algorithm>
+
+namespace Botan {
+
+namespace {
+ const u64bit blake2b_IV[BLAKE2B_IVU64COUNT] = {
+ 0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
+ 0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
+ 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
+ 0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
+ };
+
+ const u64bit blake2b_sigma[12][16] = {
+ { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
+ { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 } ,
+ { 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 } ,
+ { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 } ,
+ { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 } ,
+ { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 } ,
+ { 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 } ,
+ { 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 } ,
+ { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 } ,
+ { 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0 } ,
+ { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
+ { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }
+ };
+}
+
+Blake2b* Blake2b::make(const Spec& spec) {
+ return new Blake2b(spec.arg_as_integer(0, 512));
+}
+
+Blake2b::Blake2b(size_t output_bits) :
+ m_output_bits(output_bits),
+ m_buffer(BLAKE2B_BLOCKBYTES),
+ m_buflen(0),
+ m_H(BLAKE2B_IVU64COUNT),
+ m_T{0},
+ m_F{0} {
+ if(output_bits == 0 || output_bits % 8 != 0
+ || output_bits / 8 > BLAKE2B_OUTBYTES) {
+ throw Invalid_Argument("Bad output bits size for Blake2b");
+ }
+
+ state_init();
+}
+
+inline void Blake2b::state_init() {
+ std::copy(std::begin(blake2b_IV), std::end(blake2b_IV), m_H.begin());
+ m_H[0] ^= 0x01010000 ^ static_cast<byte>(output_length());
+}
+
+void Blake2b::compress(bool lastblock) {
+ u64bit m[16];
+ u64bit v[16];
+ u64bit* const H = m_H.data();
+ const byte* const block = m_buffer.data();
+
+ if(lastblock) {
+ m_F[0] = ~0ULL;
+ }
+
+ for(int i = 0; i < 16; i++) {
+ m[i] = load_le<u64bit>(block, i);
+ }
+
+ for(int i = 0; i < 8; i++) {
+ v[i] = H[i];
+ v[i + 8] = blake2b_IV[i];
+ }
+
+ v[12] ^= m_T[0];
+ v[13] ^= m_T[1];
+ v[14] ^= m_F[0];
+ v[15] ^= m_F[1];
+
+#define rotr64(w, c) (((w) >> c) ^ ((w) << (64 - c)))
+
+#define G(r, i, a, b, c, d) \
+ do { \
+ a = a + b + m[blake2b_sigma[r][2 * i + 0]]; \
+ d = rotr64(d ^ a, 32); \
+ c = c + d; \
+ b = rotr64(b ^ c, 24); \
+ a = a + b + m[blake2b_sigma[r][2 * i + 1]]; \
+ d = rotr64(d ^ a, 16); \
+ c = c + d; \
+ b = rotr64(b ^ c, 63); \
+ } while(0)
+
+#define ROUND(r) \
+ do { \
+ G(r, 0, v[0], v[4], v[8], v[12]); \
+ G(r, 1, v[1], v[5], v[9], v[13]); \
+ G(r, 2, v[2], v[6], v[10], v[14]); \
+ G(r, 3, v[3], v[7], v[11], v[15]); \
+ G(r, 4, v[0], v[5], v[10], v[15]); \
+ G(r, 5, v[1], v[6], v[11], v[12]); \
+ G(r, 6, v[2], v[7], v[8], v[13]); \
+ G(r, 7, v[3], v[4], v[9], v[14]); \
+ } while(0)
+
+ ROUND(0);
+ ROUND(1);
+ ROUND(2);
+ ROUND(3);
+ ROUND(4);
+ ROUND(5);
+ ROUND(6);
+ ROUND(7);
+ ROUND(8);
+ ROUND(9);
+ ROUND(10);
+ ROUND(11);
+
+ for(int i = 0; i < 8; i++) {
+ H[i] ^= v[i] ^ v[i + 8];
+ }
+
+#undef G
+#undef ROUND
+#undef rotr64
+}
+
+inline void Blake2b::increment_counter(const u64bit inc) {
+ m_T[0] += inc;
+ if(m_T[0] < inc) {
+ m_T[1]++;
+ }
+}
+
+void Blake2b::add_data(const byte input[], size_t length) {
+ if(!input || length == 0) {
+ return;
+ }
+
+ byte* const buffer = m_buffer.data();
+
+ while(length > 0) {
+ size_t fill = BLAKE2B_BLOCKBYTES - m_buflen;
+
+ if(length <= fill) {
+ std::memcpy(buffer + m_buflen, input, length);
+ m_buflen += length;
+ return;
+ }
+
+ std::memcpy(buffer + m_buflen, input, fill);
+ increment_counter(BLAKE2B_BLOCKBYTES);
+ compress();
+
+ m_buflen = 0;
+ input += fill;
+ length -= fill;
+ }
+}
+
+void Blake2b::final_result(byte output[]) {
+ if(!output) {
+ return;
+ }
+
+ byte* const buffer = m_buffer.data();
+ const u64bit* const H = static_cast<const u64bit*>(m_H.data());
+ u16bit outlen = static_cast<u16bit>(output_length());
+
+ std::memset(buffer + m_buflen, 0, BLAKE2B_BLOCKBYTES - m_buflen);
+ increment_counter(m_buflen);
+ compress(true);
+
+ for (u16bit i = 0; i < outlen; i++) {
+ output[i] = (H[i >> 3] >> (8 * (i & 7))) & 0xFF;
+ }
+
+ clear();
+}
+
+std::string Blake2b::name() const {
+ return "Blake2b(" + std::to_string(m_output_bits) + ")";
+}
+
+HashFunction* Blake2b::clone() const {
+ return new Blake2b(m_output_bits);
+}
+
+void Blake2b::clear() {
+ zeroise(m_H);
+ zeroise(m_buffer);
+ m_buflen = 0;
+ m_T[0] = m_T[1] = 0;
+ m_F[0] = m_F[1] = 0;
+ state_init();
+}
+
+}
diff --git a/src/lib/hash/blake2/blake2b.h b/src/lib/hash/blake2/blake2b.h
new file mode 100644
index 000000000..d330c1452
--- /dev/null
+++ b/src/lib/hash/blake2/blake2b.h
@@ -0,0 +1,56 @@
+#ifndef BLAKE2B_H__
+#define BLAKE2B_H__
+
+#include <botan/hash.h>
+#include <string>
+#include <memory>
+
+namespace Botan {
+
+enum blake2b_constant {
+ BLAKE2B_BLOCKBYTES = 128,
+ BLAKE2B_OUTBYTES = 64,
+ BLAKE2B_IVU64COUNT = 8
+};
+
+/**
+* BLAKE2B
+*/
+class BOTAN_DLL Blake2b final : public HashFunction
+ {
+ public:
+ /**
+ * @param output_bits the output size of Blake2b in bits
+ */
+ Blake2b(size_t output_bits = 512);
+
+ size_t hash_block_size() const override { return BLAKE2B_BLOCKBYTES; }
+ size_t output_length() const override { return m_output_bits / 8; }
+
+ static Blake2b* make(const Spec& spec);
+
+ HashFunction* clone() const override;
+ std::string name() const override;
+ void clear() override;
+
+ private:
+ void add_data(const byte input[], size_t length) override;
+ void final_result(byte out[]) override;
+
+ inline void state_init();
+ inline void increment_counter(const u64bit inc);
+ void compress(bool lastblock = false);
+
+ size_t m_output_bits;
+
+ secure_vector<byte> m_buffer;
+ size_t m_buflen;
+
+ secure_vector<u64bit> m_H;
+ u64bit m_T[2];
+ u64bit m_F[2];
+ };
+
+}
+
+#endif
diff --git a/src/lib/hash/blake2/info.txt b/src/lib/hash/blake2/info.txt
new file mode 100644
index 000000000..6c6d88afe
--- /dev/null
+++ b/src/lib/hash/blake2/info.txt
@@ -0,0 +1 @@
+define BLAKE2B 20130131
diff --git a/src/lib/hash/hash.cpp b/src/lib/hash/hash.cpp
index fe210705e..b6a7ca50d 100644
--- a/src/lib/hash/hash.cpp
+++ b/src/lib/hash/hash.cpp
@@ -89,6 +89,10 @@
#include <botan/comb4p.h>
#endif
+#if defined(BOTAN_HAS_BLAKE2B)
+ #include <botan/blake2b.h>
+#endif
+
namespace Botan {
std::unique_ptr<HashFunction> HashFunction::create(const std::string& algo_spec,
@@ -203,4 +207,8 @@ BOTAN_REGISTER_NAMED_T(HashFunction, "Skein-512", Skein_512, Skein_512::make);
BOTAN_REGISTER_HASH_NOARGS(Whirlpool);
#endif
+#if defined(BOTAN_HAS_BLAKE2B)
+BOTAN_REGISTER_NAMED_T(HashFunction, "Blake2b", Blake2b, Blake2b::make);
+#endif
+
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 11:43:22 +0000