Mercurial > dropbear

annotate libtomcrypt/testprof/dsa_test.c @ 1659:d32bcb5c557d

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Add Ed25519 support (#91) * Add support for Ed25519 as a public key type Ed25519 is a elliptic curve signature scheme that offers better security than ECDSA and DSA and good performance. It may be used for both user and host keys. OpenSSH key import and fuzzer are not supported yet. Initially inspired by Peter Szabo. * Add curve25519 and ed25519 fuzzers * Add import and export of Ed25519 keys
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Wed, 11 Mar 2020 21:09:45 +0500
parents f849a5ca2efc
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #include <tomcrypt_test.h>
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2
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3 #ifdef LTC_MDSA
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5 int dsa_test(void)
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6 {
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7 unsigned char msg[16], out[1024], out2[1024];
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8 unsigned long x, y;
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9 int stat1, stat2;
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10 dsa_key key, key2;
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12 /* make a random key */
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13 DO(dsa_make_key(&yarrow_prng, find_prng("yarrow"), 20, 128, &key));
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15 /* verify it */
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16 DO(dsa_verify_key(&key, &stat1));
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17 if (stat1 == 0) { fprintf(stderr, "dsa_verify_key "); return 1; }
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19 /* encrypt a message */
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20 for (x = 0; x < 16; x++) { msg[x] = x; }
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21 x = sizeof(out);
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22 DO(dsa_encrypt_key(msg, 16, out, &x, &yarrow_prng, find_prng("yarrow"), find_hash("sha1"), &key));
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24 /* decrypt */
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25 y = sizeof(out2);
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26 DO(dsa_decrypt_key(out, x, out2, &y, &key));
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28 if (y != 16 || memcmp(out2, msg, 16)) {
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29 fprintf(stderr, "dsa_decrypt failed, y == %lu\n", y);
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30 return 1;
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31 }
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33 /* sign the message */
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34 x = sizeof(out);
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35 DO(dsa_sign_hash(msg, sizeof(msg), out, &x, &yarrow_prng, find_prng("yarrow"), &key));
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37 /* verify it once */
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38 DO(dsa_verify_hash(out, x, msg, sizeof(msg), &stat1, &key));
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40 /* Modify and verify again */
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41 msg[0] ^= 1;
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42 DO(dsa_verify_hash(out, x, msg, sizeof(msg), &stat2, &key));
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43 msg[0] ^= 1;
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44 if (!(stat1 == 1 && stat2 == 0)) { fprintf(stderr, "dsa_verify %d %d", stat1, stat2); return 1; }
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45
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46 /* test exporting it */
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47 x = sizeof(out2);
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48 DO(dsa_export(out2, &x, PK_PRIVATE, &key));
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49 DO(dsa_import(out2, x, &key2));
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51 /* verify a signature with it */
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52 DO(dsa_verify_hash(out, x, msg, sizeof(msg), &stat1, &key2));
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53 if (stat1 == 0) { fprintf(stderr, "dsa_verify (import private) %d ", stat1); return 1; }
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54 dsa_free(&key2);
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55
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56 /* export as public now */
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57 x = sizeof(out2);
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58 DO(dsa_export(out2, &x, PK_PUBLIC, &key));
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59
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60 DO(dsa_import(out2, x, &key2));
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61 /* verify a signature with it */
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62 DO(dsa_verify_hash(out, x, msg, sizeof(msg), &stat1, &key2));
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63 if (stat1 == 0) { fprintf(stderr, "dsa_verify (import public) %d ", stat1); return 1; }
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64 dsa_free(&key2);
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65 dsa_free(&key);
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66
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67 return 0;
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68 }
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70 #else
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72 int dsa_test(void)
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73 {
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74 fprintf(stderr, "NOP");
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75 return 0;
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76 }
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77
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78 #endif
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79
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80 /* $Source$ */
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81 /* $Revision$ */
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82 /* $Date$ */