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#!/usr/bin/env python
import sys
try:
from M2Crypto import RSA
except ImportError, e:
sys.stderr.write('ERROR: Failed to import the "M2Crypto" module: %s\n' % e.message)
sys.stderr.write('Please install the "M2Crypto" Python module.\n')
sys.stderr.write('On Debian GNU/Linux the package is called "python-m2crypto".\n')
sys.exit(1)
def print_ssl_64(output, name, val):
while val[0] == '\0':
val = val[1:]
while len(val) % 8:
val = '\0' + val
vnew = []
while len(val):
vnew.append((val[0], val[1], val[2], val[3], val[4], val[5], val[6], val[7]))
val = val[8:]
vnew.reverse()
output.write('static BN_ULONG %s[%d] = {\n' % (name, len(vnew)))
idx = 0
for v1, v2, v3, v4, v5, v6, v7, v8 in vnew:
if not idx:
output.write('\t')
output.write('0x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x, ' % (ord(v1), ord(v2), ord(v3), ord(v4), ord(v5), ord(v6), ord(v7), ord(v8)))
idx += 1
if idx == 2:
idx = 0
output.write('\n')
if idx:
output.write('\n')
output.write('};\n\n')
def print_ssl_32(output, name, val):
while val[0] == '\0':
val = val[1:]
while len(val) % 4:
val = '\0' + val
vnew = []
while len(val):
vnew.append((val[0], val[1], val[2], val[3], ))
val = val[4:]
vnew.reverse()
output.write('static BN_ULONG %s[%d] = {\n' % (name, len(vnew)))
idx = 0
for v1, v2, v3, v4 in vnew:
if not idx:
output.write('\t')
output.write('0x%.2x%.2x%.2x%.2x, ' % (ord(v1), ord(v2), ord(v3), ord(v4)))
idx += 1
if idx == 4:
idx = 0
output.write('\n')
if idx:
output.write('\n')
output.write('};\n\n')
def print_ssl(output, name, val):
import struct
if len(struct.pack('@L', 0)) == 8:
return print_ssl_64(output, name, val)
else:
return print_ssl_32(output, name, val)
def print_ssl_keys(output, n):
output.write(r'''
struct pubkey {
struct bignum_st e, n;
};
#define KEY(data) { \
.d = data, \
.top = sizeof(data)/sizeof(data[0]), \
}
#define KEYS(e,n) { KEY(e), KEY(n), }
static struct pubkey keys[] = {
''')
for n in xrange(n + 1):
output.write(' KEYS(e_%d, n_%d),\n' % (n, n))
output.write('};\n')
pass
def print_gcrypt(output, name, val):
while val[0] == '\0':
val = val[1:]
output.write('static const uint8_t %s[%d] = {\n' % (name, len(val)))
idx = 0
for v in val:
if not idx:
output.write('\t')
output.write('0x%.2x, ' % ord(v))
idx += 1
if idx == 8:
idx = 0
output.write('\n')
if idx:
output.write('\n')
output.write('};\n\n')
def print_gcrypt_keys(output, n):
output.write(r'''
struct key_params {
const uint8_t *e, *n;
uint32_t len_e, len_n;
};
#define KEYS(_e, _n) { \
.e = _e, .len_e = sizeof(_e), \
.n = _n, .len_n = sizeof(_n), \
}
static const struct key_params keys[] = {
''')
for n in xrange(n + 1):
output.write(' KEYS(e_%d, n_%d),\n' % (n, n))
output.write('};\n')
modes = {
'--ssl': (print_ssl, print_ssl_keys),
'--gcrypt': (print_gcrypt, print_gcrypt_keys),
}
try:
mode = sys.argv[1]
files = sys.argv[2:-1]
outfile = sys.argv[-1]
except IndexError:
mode = None
if not mode in modes:
print 'Usage: %s [%s] input-file... output-file' % (sys.argv[0], '|'.join(modes.keys()))
sys.exit(2)
output = open(outfile, 'w')
# load key
idx = 0
for f in files:
try:
key = RSA.load_pub_key(f)
except RSA.RSAError:
key = RSA.load_key(f)
modes[mode][0](output, 'e_%d' % idx, key.e[4:])
modes[mode][0](output, 'n_%d' % idx, key.n[4:])
idx += 1
modes[mode][1](output, idx - 1)
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