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8f0f5b69c0
Including mpunsafe.{h,c}, which should be an extra defence against
inadvertently using it outside the keygen library.
38 lines
916 B
C
38 lines
916 B
C
/*
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* EC key generation.
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*/
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#include "ssh.h"
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#include "sshkeygen.h"
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#include "mpint.h"
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int ecdsa_generate(struct ecdsa_key *ek, int bits)
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{
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if (!ec_nist_alg_and_curve_by_bits(bits, &ek->curve, &ek->sshk.vt))
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return 0;
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mp_int *one = mp_from_integer(1);
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ek->privateKey = mp_random_in_range(one, ek->curve->w.G_order);
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mp_free(one);
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ek->publicKey = ecdsa_public(ek->privateKey, ek->sshk.vt);
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return 1;
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}
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int eddsa_generate(struct eddsa_key *ek, int bits)
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{
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if (!ec_ed_alg_and_curve_by_bits(bits, &ek->curve, &ek->sshk.vt))
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return 0;
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/* EdDSA secret keys are just 32 bytes of hash preimage; the
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* 64-byte SHA-512 hash of that key will be used when signing,
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* but the form of the key stored on disk is the preimage
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* only. */
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ek->privateKey = mp_random_bits(bits);
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ek->publicKey = eddsa_public(ek->privateKey, ek->sshk.vt);
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return 1;
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}
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