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Helper functions to perform our truncated base64 encoding on hexdigests.
svn:r5087
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312af36126
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f8a80e8d59
@ -1688,6 +1688,31 @@ base64_decode(char *dest, size_t destlen, const char *src, size_t srclen)
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return ret;
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}
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int
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digest_to_base64(char *d64, const char *digest)
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{
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char buf[256];
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base64_encode(buf, sizeof(buf), digest, DIGEST_LEN);
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buf[BASE64_DIGEST_LEN] = '\0';
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memcpy(d64, buf, BASE64_DIGEST_LEN+1);
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return 0;
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}
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int
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digest_from_base64(char *digest, const char *d64)
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{
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char buf_in[BASE64_DIGEST_LEN+3];
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char buf[256];
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if (strlen(d64) != BASE64_DIGEST_LEN)
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return -1;
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memcpy(buf_in, d64, BASE64_DIGEST_LEN);
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memcpy(buf_in+BASE64_DIGEST_LEN, "=\n\0", 3);
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if (base64_decode(buf, sizeof(buf), buf_in, strlen(buf_in)) != DIGEST_LEN)
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return -1;
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memcpy(digest, buf, DIGEST_LEN);
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return 0;
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}
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/** Implements base32 encoding as in rfc3548. Limitation: Requires
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* that srclen*8 is a multiple of 5.
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*/
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@ -24,6 +24,9 @@
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/** Length of our DH keys. */
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#define DH_BYTES (1024/8)
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/* DOCDOC */
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#define BASE64_DIGEST_LEN 27
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/** Constants used to indicate no padding for public-key encryption */
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#define PK_NO_PADDING 60000
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/** Constants used to indicate PKCS1 padding for public-key encryption */
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@ -155,6 +158,9 @@ int base64_decode(char *dest, size_t destlen, const char *src, size_t srclen);
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#define BASE32_CHARS "abcdefghijklmnopqrstuvwxyz234567"
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void base32_encode(char *dest, size_t destlen, const char *src, size_t srclen);
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int digest_to_base64(char *d64, const char *digest);
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int digest_from_base64(char *digest, const char *d64);
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#define S2K_SPECIFIER_LEN 9
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void secret_to_key(char *key_out, size_t key_out_len, const char *secret,
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size_t secret_len, const char *s2k_specifier);
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