HCRYPTPROV hCryptProv;
-HCRYPTKEY hDESKey[2][3] = {{0,0,0},{0,0,0}}; /* global for now */
+HCRYPTKEY hDESKey[2][3] = { {0, 0, 0}, {0, 0, 0} }; /* global for now */
/* use Microsoft Enhanced Cryptographic Service Provider */
#define CSP MS_ENHANCED_PROV
-static BYTE PrivateKeyWithExponentOfOne[] =
-{
+static BYTE PrivateKeyWithExponentOfOne[] = {
0x07, 0x02, 0x00, 0x00, 0x00, 0xA4, 0x00, 0x00,
0x52, 0x53, 0x41, 0x32, 0x00, 0x02, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0xAB, 0xEF, 0xFA, 0xC6,
* ---------------------------------------------------------*/
-int crypto_startup() {
- if(CryptAcquireContext(&hCryptProv, "Putty", CSP, PROV_RSA_FULL,
- CRYPT_NEWKEYSET) == 0) {
- if(GetLastError() == NTE_EXISTS) {
- if(CryptAcquireContext(&hCryptProv, "Putty", CSP,
- PROV_RSA_FULL, 0) == 0) {
- return FALSE; /* failed to acquire context - probably
- * don't have high encryption installed! */
+int crypto_startup()
+{
+ if (CryptAcquireContext(&hCryptProv, "Putty", CSP, PROV_RSA_FULL,
+ CRYPT_NEWKEYSET) == 0) {
+ if (GetLastError() == NTE_EXISTS) {
+ if (CryptAcquireContext(&hCryptProv, "Putty", CSP,
+ PROV_RSA_FULL, 0) == 0) {
+ return FALSE; /* failed to acquire context - probably
+ * don't have high encryption installed! */
}
} else
- return FALSE; /* failed to acquire context - probably
- * don't have high encryption installed! */
+ return FALSE; /* failed to acquire context - probably
+ * don't have high encryption installed! */
}
return TRUE;
}
-void crypto_wrapup() {
+void crypto_wrapup()
+{
int i, j;
- for(i=0; i<2; i++) {
- for(j=0; j<3; j++) {
- if(hDESKey[i][j])
+ for (i = 0; i < 2; i++) {
+ for (j = 0; j < 3; j++) {
+ if (hDESKey[i][j])
CryptDestroyKey(hDESKey[i][j]);
hDESKey[i][j] = 0;
}
}
- if(hCryptProv)
+ if (hCryptProv)
CryptReleaseContext(hCryptProv, 0);
hCryptProv = 0;
}
* Random number functions *
* ---------------------------------------------------------*/
-int random_byte(void) {
+int random_byte(void)
+{
unsigned char b;
- if(!CryptGenRandom(hCryptProv, 1, &b))
+ if (!CryptGenRandom(hCryptProv, 1, &b))
fatalbox("random number generator failure!");
return b;
}
-void random_add_noise(void *noise, int length) {
+void random_add_noise(void *noise, int length)
+{
/* do nothing */
}
-void random_init(void) {
+void random_init(void)
+{
/* do nothing */
}
-void random_get_savedata(void **data, int *len) {
+void random_get_savedata(void **data, int *len)
+{
/* do nothing */
}
-void noise_get_heavy(void (*func) (void *, int)) {
+void noise_get_heavy(void (*func) (void *, int))
+{
/* do nothing */
}
-void noise_get_light(void (*func) (void *, int)) {
+void noise_get_light(void (*func) (void *, int))
+{
/* do nothing */
}
-void noise_ultralight(DWORD data) {
+void noise_ultralight(DWORD data)
+{
/* do nothing */
}
-void random_save_seed(void) {
+void random_save_seed(void)
+{
/* do nothing */
}
* ---------------------------------------------------------*/
-void MD5Init(struct MD5Context *ctx) {
- if(!CryptCreateHash(hCryptProv, CALG_MD5, 0, 0, &ctx->hHash))
+void MD5Init(struct MD5Context *ctx)
+{
+ if (!CryptCreateHash(hCryptProv, CALG_MD5, 0, 0, &ctx->hHash))
fatalbox("Error during CryptBeginHash!\n");
}
void MD5Update(struct MD5Context *ctx,
- unsigned char const *buf, unsigned len) {
- if(CryptHashData(ctx->hHash, buf, len, 0) == 0)
+ unsigned char const *buf, unsigned len)
+{
+ if (CryptHashData(ctx->hHash, buf, len, 0) == 0)
fatalbox("Error during CryptHashSessionKey!\n");
}
-void MD5Final(unsigned char digest[16], struct MD5Context *ctx) {
+void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
+{
DWORD cb = 16;
- if(CryptGetHashParam(ctx->hHash, HP_HASHVAL, digest, &cb, 0) == 0)
+ if (CryptGetHashParam(ctx->hHash, HP_HASHVAL, digest, &cb, 0) == 0)
fatalbox("Error during CryptGetHashParam!\n");
- if(ctx->hHash)
+ if (ctx->hHash)
CryptDestroyHash(ctx->hHash);
ctx->hHash = 0;
}
* ---------------------------------------------------------*/
int makekey(unsigned char *data, struct RSAKey *result,
- unsigned char **keystr) {
+ unsigned char **keystr)
+{
unsigned char *p = data;
int i;
/* get size (bits) of modulus */
result->bits = 0;
- for(i=0; i<4; i++)
+ for (i = 0; i < 4; i++)
result->bits = (result->bits << 8) + *p++;
/* get size (bits) of public exponent */
w = 0;
- for (i=0; i<2; i++)
+ for (i = 0; i < 2; i++)
w = (w << 8) + *p++;
- b = (w+7)/8; /* bits -> bytes */
+ b = (w + 7) / 8; /* bits -> bytes */
/* convert exponent to DWORD */
result->exponent = 0;
- for (i=0; i<b; i++)
+ for (i = 0; i < b; i++)
result->exponent = (result->exponent << 8) + *p++;
/* get size (bits) of modulus */
w = 0;
- for (i=0; i<2; i++)
+ for (i = 0; i < 2; i++)
w = (w << 8) + *p++;
- result->bytes = b = (w+7)/8; /* bits -> bytes */
+ result->bytes = b = (w + 7) / 8; /* bits -> bytes */
/* allocate buffer for modulus & copy it */
result->modulus = malloc(b);
memcpy(result->modulus, p, b);
/* update callers pointer */
- if (keystr) *keystr = p; /* point at key string, second time */
+ if (keystr)
+ *keystr = p; /* point at key string, second time */
return (p - data) + b;
}
-void rsaencrypt(unsigned char *data, int length, struct RSAKey *rsakey) {
+void rsaencrypt(unsigned char *data, int length, struct RSAKey *rsakey)
+{
int i;
unsigned char *pKeybuf, *pKeyin;
DWORD bufsize;
/* allocate buffer for public key blob */
- if((pBlob = malloc(sizeof(PUBLICKEYSTRUC) + sizeof(RSAPUBKEY) +
- rsakey->bytes)) == NULL)
+ if ((pBlob = malloc(sizeof(PUBLICKEYSTRUC) + sizeof(RSAPUBKEY) +
+ rsakey->bytes)) == NULL)
fatalbox("Out of memory");
/* allocate buffer for message encryption block */
bufsize = (length + rsakey->bytes) << 1;
- if((buf = malloc(bufsize)) == NULL)
+ if ((buf = malloc(bufsize)) == NULL)
fatalbox("Out of memory");
/* construct public key blob from host public key */
- pKeybuf = ((unsigned char*)pBlob) + sizeof(PUBLICKEYSTRUC) +
+ pKeybuf = ((unsigned char *) pBlob) + sizeof(PUBLICKEYSTRUC) +
sizeof(RSAPUBKEY);
- pKeyin = ((unsigned char*)rsakey->modulus);
+ pKeyin = ((unsigned char *) rsakey->modulus);
/* change big endian to little endian */
- for(i=0; i<rsakey->bytes; i++)
- pKeybuf[i] = pKeyin[rsakey->bytes-i-1];
+ for (i = 0; i < rsakey->bytes; i++)
+ pKeybuf[i] = pKeyin[rsakey->bytes - i - 1];
pBlob->bType = PUBLICKEYBLOB;
pBlob->bVersion = 0x02;
pBlob->reserved = 0;
pBlob->aiKeyAlg = CALG_RSA_KEYX;
- pRPK = (RSAPUBKEY*)(((unsigned char*)pBlob) + sizeof(PUBLICKEYSTRUC));
- pRPK->magic = 0x31415352; /* "RSA1" */
+ pRPK =
+ (RSAPUBKEY *) (((unsigned char *) pBlob) + sizeof(PUBLICKEYSTRUC));
+ pRPK->magic = 0x31415352; /* "RSA1" */
pRPK->bitlen = rsakey->bits;
pRPK->pubexp = rsakey->exponent;
/* import public key blob into key container */
- if(CryptImportKey(hCryptProv, (void*)pBlob,
- sizeof(PUBLICKEYSTRUC)+sizeof(RSAPUBKEY)+rsakey->bytes,
- 0, 0, &hRsaKey) == 0)
+ if (CryptImportKey(hCryptProv, (void *) pBlob,
+ sizeof(PUBLICKEYSTRUC) + sizeof(RSAPUBKEY) +
+ rsakey->bytes, 0, 0, &hRsaKey) == 0)
fatalbox("Error importing RSA key!");
/* copy message into buffer */
dlen = length;
/* using host public key, encrypt the message */
- if(CryptEncrypt(hRsaKey, 0, TRUE, 0, buf, &dlen, bufsize) == 0)
+ if (CryptEncrypt(hRsaKey, 0, TRUE, 0, buf, &dlen, bufsize) == 0)
fatalbox("Error encrypting using RSA key!");
/*
* key, returns the cyphertext in backwards (little endian)
* order, so reverse it!
*/
- for(i = 0; i < (int)dlen; i++)
- data[i] = buf[dlen - i - 1]; /* make it big endian */
+ for (i = 0; i < (int) dlen; i++)
+ data[i] = buf[dlen - i - 1]; /* make it big endian */
CryptDestroyKey(hRsaKey);
free(buf);
}
-int rsastr_len(struct RSAKey *key) {
+int rsastr_len(struct RSAKey *key)
+{
return 2 * (sizeof(DWORD) + key->bytes) + 10;
}
-void rsastr_fmt(char *str, struct RSAKey *key) {
+void rsastr_fmt(char *str, struct RSAKey *key)
+{
int len = 0, i;
- sprintf(str+len, "%04x", key->exponent);
- len += strlen(str+len);
+ sprintf(str + len, "%04x", key->exponent);
+ len += strlen(str + len);
str[len++] = '/';
- for (i=1; i<key->bytes; i++) {
- sprintf(str+len, "%02x", key->modulus[i]);
- len += strlen(str+len);
+ for (i = 1; i < key->bytes; i++) {
+ sprintf(str + len, "%02x", key->modulus[i]);
+ len += strlen(str + len);
}
str[len] = '\0';
}
* ---------------------------------------------------------*/
-void des3_sesskey(unsigned char *key) {
+void des3_sesskey(unsigned char *key)
+{
int i, j;
- for(i = 0; i < 2; i++) {
- for(j = 0; j < 3; j++) {
+ for (i = 0; i < 2; i++) {
+ for (j = 0; j < 3; j++) {
hDESKey[i][j] = create_des_key(key + (j * 8));
}
}
}
-void des3_encrypt_blk(unsigned char *blk, int len) {
+void des3_encrypt_blk(unsigned char *blk, int len)
+{
DWORD dlen;
dlen = len;
- if(CryptEncrypt(hDESKey[0][0], 0, FALSE, 0, blk, &dlen, len + 8) == 0)
+ if (CryptEncrypt(hDESKey[0][0], 0, FALSE, 0, blk, &dlen, len + 8) == 0)
fatalbox("Error encrypting block!\n");
- if(CryptDecrypt(hDESKey[0][1], 0, FALSE, 0, blk, &dlen) == 0)
+ if (CryptDecrypt(hDESKey[0][1], 0, FALSE, 0, blk, &dlen) == 0)
fatalbox("Error encrypting block!\n");
- if(CryptEncrypt(hDESKey[0][2], 0, FALSE, 0, blk, &dlen, len + 8) == 0)
+ if (CryptEncrypt(hDESKey[0][2], 0, FALSE, 0, blk, &dlen, len + 8) == 0)
fatalbox("Error encrypting block!\n");
}
-void des3_decrypt_blk(unsigned char *blk, int len) {
+void des3_decrypt_blk(unsigned char *blk, int len)
+{
DWORD dlen;
dlen = len;
- if(CryptDecrypt(hDESKey[1][2], 0, FALSE, 0, blk, &dlen) == 0)
+ if (CryptDecrypt(hDESKey[1][2], 0, FALSE, 0, blk, &dlen) == 0)
fatalbox("Error decrypting block!\n");
- if(CryptEncrypt(hDESKey[1][1], 0, FALSE, 0, blk, &dlen, len + 8) == 0)
+ if (CryptEncrypt(hDESKey[1][1], 0, FALSE, 0, blk, &dlen, len + 8) == 0)
fatalbox("Error decrypting block!\n");
- if(CryptDecrypt(hDESKey[1][0], 0, FALSE, 0, blk, &dlen) == 0)
+ if (CryptDecrypt(hDESKey[1][0], 0, FALSE, 0, blk, &dlen) == 0)
fatalbox("Error decrypting block!\n");
}
};
-void des_sesskey(unsigned char *key) {
+void des_sesskey(unsigned char *key)
+{
int i;
- for(i = 0; i < 2; i++) {
+ for (i = 0; i < 2; i++) {
hDESKey[i][0] = create_des_key(key);
}
}
-void des_encrypt_blk(unsigned char *blk, int len) {
+void des_encrypt_blk(unsigned char *blk, int len)
+{
DWORD dlen;
dlen = len;
- if(CryptEncrypt(hDESKey[0][0], 0, FALSE, 0, blk, &dlen, len + 8) == 0)
+ if (CryptEncrypt(hDESKey[0][0], 0, FALSE, 0, blk, &dlen, len + 8) == 0)
fatalbox("Error encrypting block!\n");
}
-void des_decrypt_blk(unsigned char *blk, int len) {
+void des_decrypt_blk(unsigned char *blk, int len)
+{
DWORD dlen;
dlen = len;
- if(CryptDecrypt(hDESKey[1][0], 0, FALSE, 0, blk, &dlen) == 0)
+ if (CryptDecrypt(hDESKey[1][0], 0, FALSE, 0, blk, &dlen) == 0)
fatalbox("Error decrypting block!\n");
}
};
-static HCRYPTKEY create_des_key(unsigned char *key) {
+static HCRYPTKEY create_des_key(unsigned char *key)
+{
HCRYPTKEY hSessionKey, hPrivateKey;
DWORD dlen = 8;
* import session key, since only encrypted session keys can be
* imported
*/
- if(CryptImportKey(hCryptProv, PrivateKeyWithExponentOfOne,
- sizeof(PrivateKeyWithExponentOfOne),
- 0, 0, &hPrivateKey) == 0)
+ if (CryptImportKey(hCryptProv, PrivateKeyWithExponentOfOne,
+ sizeof(PrivateKeyWithExponentOfOne),
+ 0, 0, &hPrivateKey) == 0)
return 0;
/* now encrypt session key using special private key */
memcpy(buf + sizeof(BLOBHEADER) + sizeof(ALG_ID), key, 8);
- if(CryptEncrypt(hPrivateKey, 0, TRUE, 0,
- buf + sizeof(BLOBHEADER) + sizeof(ALG_ID),
- &dlen, 256) == 0)
+ if (CryptEncrypt(hPrivateKey, 0, TRUE, 0,
+ buf + sizeof(BLOBHEADER) + sizeof(ALG_ID),
+ &dlen, 256) == 0)
return 0;
/* build session key blob */
- pbh = (BLOBHEADER*)buf;
+ pbh = (BLOBHEADER *) buf;
pbh->bType = SIMPLEBLOB;
pbh->bVersion = 0x02;
pbh->reserved = 0;
pbh->aiKeyAlg = CALG_DES;
- *((ALG_ID*)(buf+sizeof(BLOBHEADER))) = CALG_RSA_KEYX;
+ *((ALG_ID *) (buf + sizeof(BLOBHEADER))) = CALG_RSA_KEYX;
/* import session key into key container */
- if(CryptImportKey(hCryptProv, buf,
- dlen + sizeof(BLOBHEADER) + sizeof(ALG_ID),
- hPrivateKey, 0, &hSessionKey) == 0)
+ if (CryptImportKey(hCryptProv, buf,
+ dlen + sizeof(BLOBHEADER) + sizeof(ALG_ID),
+ hPrivateKey, 0, &hSessionKey) == 0)
return 0;
- if(hPrivateKey)
+ if (hPrivateKey)
CryptDestroyKey(hPrivateKey);
return hSessionKey;
projects / u / mdw / putty / blobdiff