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[base16] Add buffer size parameter to base16_encode() and base16_decode()

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The current API for Base16 (and Base64) encoding requires the caller
to always provide sufficient buffer space.  This prevents the use of
the generic encoding/decoding functionality in some situations, such
as in formatting the hex setting types.

Implement a generic hex_encode() (based on the existing
format_hex_setting()), implement base16_encode() and base16_decode()
in terms of the more generic hex_encode() and hex_decode(), and update
all callers to provide the additional buffer length parameter.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2015-04-24 14:34:32 +01:00
parent b56b482fa3
commit 9aa8090d06
12 changed files with 111 additions and 126 deletions
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3
src/crypto/x509.c
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@@ -143,7 +143,8 @@ const char * x509_name ( struct x509_certificate *cert ) {
} else {
/* Certificate has no commonName: use SHA-1 fingerprint */
x509_fingerprint ( cert, digest, fingerprint );
base16_encode ( fingerprint, sizeof ( fingerprint ), buf );
base16_encode ( fingerprint, sizeof ( fingerprint ),
buf, sizeof ( buf ) );
}
return buf;
}