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48 lines
945 B
C
48 lines
945 B
C
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/* j/5/shar.c
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**
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*/
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#include "all.h"
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#include <ed25519.h>
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u3_noun
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u3qee_shar(u3_atom pub, u3_atom sek)
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{
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c3_y pub_y[32], sek_y[32], self_y[32], exp_y[64], shr_y[32];
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c3_w met_pub_w, met_sek_w;
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met_pub_w = u3r_met(3, pub);
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met_sek_w = u3r_met(3, sek);
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if ( (met_pub_w > 32) || (met_sek_w > 32) ) {
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return u3m_bail(c3__exit);
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}
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u3r_bytes(0, 32, pub_y, pub);
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u3r_bytes(0, 32, sek_y, sek);
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memset(self_y, 0, 32);
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memset(exp_y, 0, 64);
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memset(shr_y, 0, 32);
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ed25519_create_keypair(self_y, exp_y, sek_y);
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ed25519_key_exchange(shr_y, pub_y, exp_y);
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return u3i_bytes(32, shr_y);
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}
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u3_noun
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u3wee_shar(u3_noun cor)
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{
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u3_noun pub, sek;
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if ( (c3n == u3r_mean(cor, u3x_sam_2, &pub, u3x_sam_3, &sek, 0)) ||
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(c3n == u3ud(pub)) ||
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(c3n == u3ud(sek)) )
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{
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return u3m_bail(c3__exit);
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} else {
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return u3qee_shar(pub, sek);
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}
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}
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