26 lines
931 B
Plaintext
26 lines
931 B
Plaintext
#include <edsign.cuh>
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#include <ed25519.cuh>
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#include <sha512.cuh>
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__device__ __forceinline__ void expand_key(unsigned char* expanded, const unsigned char* secret) {
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struct sha512_state s;
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memcpy(&s, &sha512_initial_state, sizeof(s));
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sha512_final(&s, secret);
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sha512_get(&s, expanded);
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expanded[0] &= 0xf8;
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expanded[31] &= 0x7f;
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expanded[31] |= 0x40;
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}
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__device__ __forceinline__ void sm_pack(unsigned char* r, const unsigned char* k) {
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struct ed25519_pt p;
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ed25519_smult(&p, k);
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unsigned char x[32], y[32];
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ed25519_unproject(x, y, &p);
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ed25519_pack(r, x, y);
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}
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__device__ void ed25519_keygen(unsigned char private_key[64], unsigned char public_key[32], unsigned char random_seed[32]) {
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unsigned char expanded[64];
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expand_key(expanded, random_seed);
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sm_pack(public_key, expanded);
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memcpy(private_key, random_seed, 32);
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memcpy(private_key + 32, public_key, 32);
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} |