static
SECStatus
OurVerifySignedData(CERTSignedData *sd, CERTCertificate *cert)
{
SECItem sig;
SECKEYPublicKey *pubKey = 0;
SECStatus rv;
/* check the certificate's validity */
rv = CERT_CertTimesValid(cert);
if ( rv ) {
return(SECFailure);
}
/* get cert's public key */
pubKey = CERT_ExtractPublicKey(cert);
if ( !pubKey ) {
return(SECFailure);
}
/* check the signature */
sig = sd->signature;
DER_ConvertBitString(&sig);
rv = OurVerifyData(sd->data.data, sd->data.len, pubKey, &sig,
&sd->signatureAlgorithm);
SECKEY_DestroyPublicKey(pubKey);
if ( rv ) {
return(SECFailure);
}
return(SECSuccess);
}
/* From certdb.c */
static SECStatus
cert_ImportCAChain(SECItem *certs, int numcerts, SECCertUsage certUsage, PRBool trusted)
{
SECStatus rv;
SECItem *derCert;
CERTCertificate *cert = NULL;
CERTCertificate *newcert = NULL;
CERTCertDBHandle *handle;
CERTCertTrust trust;
PRBool isca;
char *nickname;
unsigned int certtype;
handle = CERT_GetDefaultCertDB();
while (numcerts--) {
derCert = certs;
certs++;
/* decode my certificate */
/* This use is ok -- only looks at decoded parts, calls NewTemp later */
newcert = CERT_DecodeDERCertificate(derCert, PR_FALSE, NULL);
if ( newcert == NULL ) {
goto loser;
}
if (!trusted) {
/* make sure that cert is valid */
rv = CERT_CertTimesValid(newcert);
if ( rv == SECFailure ) {
goto endloop;
}
}
/* does it have the CA extension */
/*
* Make sure that if this is an intermediate CA in the chain that
* it was given permission by its signer to be a CA.
*/
isca = CERT_IsCACert(newcert, &certtype);
if ( !isca ) {
if (!trusted) {
goto endloop;
}
trust.sslFlags = CERTDB_VALID_CA;
trust.emailFlags = CERTDB_VALID_CA;
trust.objectSigningFlags = CERTDB_VALID_CA;
} else {
/* SSL ca's must have the ssl bit set */
if ( ( certUsage == certUsageSSLCA ) &&
(( certtype & NS_CERT_TYPE_SSL_CA ) != NS_CERT_TYPE_SSL_CA )) {
goto endloop;
}
/* it passed all of the tests, so lets add it to the database */
/* mark it as a CA */
PORT_Memset((void *)&trust, 0, sizeof(trust));
switch ( certUsage ) {
case certUsageSSLCA:
trust.sslFlags = CERTDB_VALID_CA;
break;
case certUsageUserCertImport:
if ((certtype & NS_CERT_TYPE_SSL_CA) == NS_CERT_TYPE_SSL_CA) {
trust.sslFlags = CERTDB_VALID_CA;
}
if ((certtype & NS_CERT_TYPE_EMAIL_CA)
== NS_CERT_TYPE_EMAIL_CA ) {
trust.emailFlags = CERTDB_VALID_CA;
}
if ( ( certtype & NS_CERT_TYPE_OBJECT_SIGNING_CA ) ==
NS_CERT_TYPE_OBJECT_SIGNING_CA ) {
trust.objectSigningFlags = CERTDB_VALID_CA;
}
break;
default:
PORT_Assert(0);
break;
}
}
cert = CERT_NewTempCertificate(handle, derCert, NULL,
PR_FALSE, PR_FALSE);
if ( cert == NULL ) {
goto loser;
}
/* if the cert is temp, make it perm; otherwise we're done */
if (cert->istemp) {
/* get a default nickname for it */
nickname = CERT_MakeCANickname(cert);
rv = CERT_AddTempCertToPerm(cert, nickname, &trust);
/* free the nickname */
if ( nickname ) {
PORT_Free(nickname);
}
} else {
rv = SECSuccess;
}
CERT_DestroyCertificate(cert);
cert = NULL;
if ( rv != SECSuccess ) {
goto loser;
}
endloop:
if ( newcert ) {
CERT_DestroyCertificate(newcert);
newcert = NULL;
}
}
rv = SECSuccess;
goto done;
loser:
rv = SECFailure;
done:
if ( newcert ) {
CERT_DestroyCertificate(newcert);
newcert = NULL;
}
if ( cert ) {
CERT_DestroyCertificate(cert);
cert = NULL;
}
return(rv);
}
int main(int argc, char **argv)
{
int verbose=0, force=0;
int ascii=0, issuerAscii=0;
char *progName=0;
PRFileDesc *inFile=0, *issuerCertFile=0;
SECItem derCert, derIssuerCert;
PLArenaPool *arena=0;
CERTSignedData *signedData=0;
CERTCertificate *cert=0, *issuerCert=0;
SECKEYPublicKey *rsapubkey=0;
SECAlgorithmID md5WithRSAEncryption, md2WithRSAEncryption;
SECAlgorithmID sha1WithRSAEncryption, rsaEncryption;
SECItem spk;
int selfSigned=0;
int invalid=0;
char *inFileName = NULL, *issuerCertFileName = NULL;
PLOptState *optstate;
PLOptStatus status;
SECStatus rv;
PORT_Memset(&md5WithRSAEncryption, 0, sizeof(md5WithRSAEncryption));
PORT_Memset(&md2WithRSAEncryption, 0, sizeof(md2WithRSAEncryption));
PORT_Memset(&sha1WithRSAEncryption, 0, sizeof(sha1WithRSAEncryption));
PORT_Memset(&rsaEncryption, 0, sizeof(rsaEncryption));
progName = strrchr(argv[0], '/');
progName = progName ? progName+1 : argv[0];
optstate = PL_CreateOptState(argc, argv, "aAvf");
while ((status = PL_GetNextOpt(optstate)) == PL_OPT_OK) {
switch (optstate->option) {
case 'v':
verbose = 1;
break;
case 'f':
force = 1;
break;
case 'a':
ascii = 1;
break;
case 'A':
issuerAscii = 1;
break;
case '\0':
if (!inFileName)
inFileName = PL_strdup(optstate->value);
else if (!issuerCertFileName)
issuerCertFileName = PL_strdup(optstate->value);
else
Usage(progName);
break;
}
}
if (!inFileName || !issuerCertFileName || status == PL_OPT_BAD) {
/* insufficient or excess args */
Usage(progName);
}
inFile = PR_Open(inFileName, PR_RDONLY, 0);
if (!inFile) {
fprintf(stderr, "%s: unable to open \"%s\" for reading\n",
progName, inFileName);
exit(1);
}
issuerCertFile = PR_Open(issuerCertFileName, PR_RDONLY, 0);
if (!issuerCertFile) {
fprintf(stderr, "%s: unable to open \"%s\" for reading\n",
progName, issuerCertFileName);
exit(1);
}
if (SECU_ReadDERFromFile(&derCert, inFile, ascii, PR_FALSE) != SECSuccess) {
printf("Couldn't read input certificate as DER binary or base64\n");
exit(1);
}
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (arena == 0) {
fprintf(stderr,"%s: can't allocate scratch arena!", progName);
exit(1);
}
if (issuerCertFile) {
CERTSignedData *issuerCertSD=0;
if (SECU_ReadDERFromFile(&derIssuerCert, issuerCertFile, issuerAscii,
PR_FALSE) != SECSuccess) {
printf("Couldn't read issuer certificate as DER binary or base64.\n");
exit(1);
}
issuerCertSD = PORT_ArenaZNew(arena, CERTSignedData);
if (!issuerCertSD) {
fprintf(stderr,"%s: can't allocate issuer signed data!", progName);
exit(1);
}
rv = SEC_ASN1DecodeItem(arena, issuerCertSD,
SEC_ASN1_GET(CERT_SignedDataTemplate),
&derIssuerCert);
if (rv) {
fprintf(stderr, "%s: Issuer cert isn't X509 SIGNED Data?\n",
progName);
exit(1);
}
issuerCert = createEmptyCertificate();
if (!issuerCert) {
printf("%s: can't allocate space for issuer cert.", progName);
exit(1);
}
rv = SEC_ASN1DecodeItem(arena, issuerCert,
SEC_ASN1_GET(CERT_CertificateTemplate),
&issuerCertSD->data);
if (rv) {
printf("%s: Does not appear to be an X509 Certificate.\n",
progName);
exit(1);
}
}
signedData = PORT_ArenaZNew(arena,CERTSignedData);
if (!signedData) {
fprintf(stderr,"%s: can't allocate signedData!", progName);
exit(1);
}
rv = SEC_ASN1DecodeItem(arena, signedData,
SEC_ASN1_GET(CERT_SignedDataTemplate),
&derCert);
if (rv) {
fprintf(stderr, "%s: Does not appear to be X509 SIGNED Data.\n",
progName);
exit(1);
}
if (verbose) {
printf("Decoded ok as X509 SIGNED data.\n");
}
cert = createEmptyCertificate();
if (!cert) {
fprintf(stderr, "%s: can't allocate cert", progName);
exit(1);
}
rv = SEC_ASN1DecodeItem(arena, cert,
SEC_ASN1_GET(CERT_CertificateTemplate),
&signedData->data);
if (rv) {
fprintf(stderr, "%s: Does not appear to be an X509 Certificate.\n",
progName);
exit(1);
}
if (verbose) {
printf("Decoded ok as an X509 certificate.\n");
}
SECU_RegisterDynamicOids();
rv = SECU_PrintSignedData(stdout, &derCert, "Certificate", 0,
(SECU_PPFunc)SECU_PrintCertificate);
if (rv) {
fprintf(stderr, "%s: Unable to pretty print cert. Error: %d\n",
progName, PORT_GetError());
if (!force) {
exit(1);
}
}
/* Do various checks on the cert */
printf("\n");
/* Check algorithms */
rv = SECOID_SetAlgorithmID(arena, &md5WithRSAEncryption,
SEC_OID_PKCS1_MD5_WITH_RSA_ENCRYPTION, NULL);
if (rv) {
fprintf(stderr, "%s: failed to set algorithm ID for SEC_OID_PKCS1_MD5_WITH_RSA_ENCRYPTION.\n",
progName);
exit(1);
}
rv = SECOID_SetAlgorithmID(arena, &md2WithRSAEncryption,
SEC_OID_PKCS1_MD2_WITH_RSA_ENCRYPTION, NULL);
if (rv) {
fprintf(stderr, "%s: failed to set algorithm ID for SEC_OID_PKCS1_MD2_WITH_RSA_ENCRYPTION.\n",
progName);
exit(1);
}
rv = SECOID_SetAlgorithmID(arena, &sha1WithRSAEncryption,
SEC_OID_PKCS1_SHA1_WITH_RSA_ENCRYPTION, NULL);
if (rv) {
fprintf(stderr, "%s: failed to set algorithm ID for SEC_OID_PKCS1_SHA1_WITH_RSA_ENCRYPTION.\n",
progName);
exit(1);
}
rv = SECOID_SetAlgorithmID(arena, &rsaEncryption,
SEC_OID_PKCS1_RSA_ENCRYPTION, NULL);
if (rv) {
fprintf(stderr, "%s: failed to set algorithm ID for SEC_OID_PKCS1_RSA_ENCRYPTION.\n",
progName);
exit(1);
}
{
int isMD5RSA = (SECOID_CompareAlgorithmID(&cert->signature,
&md5WithRSAEncryption) == 0);
int isMD2RSA = (SECOID_CompareAlgorithmID(&cert->signature,
&md2WithRSAEncryption) == 0);
int isSHA1RSA = (SECOID_CompareAlgorithmID(&cert->signature,
&sha1WithRSAEncryption) == 0);
if (verbose) {
printf("\nDoing algorithm checks.\n");
}
if (!(isMD5RSA || isMD2RSA || isSHA1RSA)) {
printf("PROBLEM: Signature not PKCS1 MD5, MD2, or SHA1 + RSA.\n");
} else if (!isMD5RSA) {
printf("WARNING: Signature not PKCS1 MD5 with RSA Encryption\n");
}
if (SECOID_CompareAlgorithmID(&cert->signature,
&signedData->signatureAlgorithm)) {
printf("PROBLEM: Algorithm in sig and certInfo don't match.\n");
}
}
if (SECOID_CompareAlgorithmID(&cert->subjectPublicKeyInfo.algorithm,
&rsaEncryption)) {
printf("PROBLEM: Public key algorithm is not PKCS1 RSA Encryption.\n");
}
/* Check further public key properties */
spk = cert->subjectPublicKeyInfo.subjectPublicKey;
DER_ConvertBitString(&spk);
if (verbose) {
printf("\nsubjectPublicKey DER\n");
rv = DER_PrettyPrint(stdout, &spk, PR_FALSE);
printf("\n");
}
rsapubkey = (SECKEYPublicKey *)
PORT_ArenaZAlloc(arena,sizeof(SECKEYPublicKey));
if (!rsapubkey) {
fprintf(stderr, "%s: rsapubkey allocation failed.\n", progName);
exit(1);
}
rv = SEC_ASN1DecodeItem(arena, rsapubkey,
SEC_ASN1_GET(SECKEY_RSAPublicKeyTemplate), &spk);
if (rv) {
printf("PROBLEM: subjectPublicKey is not a DER PKCS1 RSAPublicKey.\n");
} else {
int mlen;
int pubexp;
if (verbose) {
printf("Decoded RSA Public Key ok. Doing key checks.\n");
}
PORT_Assert(rsapubkey->keyType == rsaKey); /* XXX RSA */
mlen = checkInteger(&rsapubkey->u.rsa.modulus, "Modulus", verbose);
printf("INFO: Public Key modulus length in bits: %d\n", mlen);
if (mlen > MAX_MODULUS) {
printf("PROBLEM: Modulus length exceeds %d bits.\n",
MAX_MODULUS);
}
if (mlen < 512) {
printf("WARNING: Short modulus.\n");
}
if (mlen != (1 << (ffs(mlen)-1))) {
printf("WARNING: Unusual modulus length (not a power of two).\n");
}
checkInteger(&rsapubkey->u.rsa.publicExponent, "Public Exponent",
verbose);
pubexp = DER_GetInteger(&rsapubkey->u.rsa.publicExponent);
if (pubexp != 17 && pubexp != 3 && pubexp != 65537) {
printf("WARNING: Public exponent not any of: 3, 17, 65537\n");
}
}
/* Name checks */
checkName(&cert->issuer, "Issuer Name", verbose);
checkName(&cert->subject, "Subject Name", verbose);
if (issuerCert) {
SECComparison c =
CERT_CompareName(&cert->issuer, &issuerCert->subject);
if (c) {
printf("PROBLEM: Issuer Name and Subject in Issuing Cert differ\n");
}
}
/* Check if self-signed */
selfSigned = (CERT_CompareName(&cert->issuer, &cert->subject) == 0);
if (selfSigned) {
printf("INFO: Certificate is self signed.\n");
} else {
printf("INFO: Certificate is NOT self-signed.\n");
}
/* Validity time check */
if (CERT_CertTimesValid(cert) == SECSuccess) {
printf("INFO: Inside validity period of certificate.\n");
} else {
printf("PROBLEM: Not in validity period of certificate.\n");
invalid = 1;
}
/* Signature check if self-signed */
if (selfSigned && !invalid) {
if (rsapubkey->u.rsa.modulus.len) {
SECStatus ver;
if (verbose) {
printf("Checking self signature.\n");
}
ver = OurVerifySignedData(signedData, cert);
if (ver != SECSuccess) {
printf("PROBLEM: Verification of self-signature failed!\n");
} else {
printf("INFO: Self-signature verifies ok.\n");
}
} else {
printf("INFO: Not checking signature due to key problems.\n");
}
} else if (!selfSigned && !invalid && issuerCert) {
SECStatus ver;
ver = OurVerifySignedData(signedData, issuerCert);
if (ver != SECSuccess) {
printf("PROBLEM: Verification of issuer's signature failed!\n");
} else {
printf("INFO: Issuer's signature verifies ok.\n");
}
} else {
printf("INFO: Not checking signature.\n");
}
return 0;
}
/*********************************************************************
*
* L i s t C e r t s
*/
int
ListCerts(char *key, int list_certs)
{
int failed = 0;
SECStatus rv;
char *ugly_list;
CERTCertDBHandle *db;
CERTCertificate *cert;
CERTVerifyLog errlog;
errlog.arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (errlog.arena == NULL) {
out_of_memory();
}
errlog.head = NULL;
errlog.tail = NULL;
errlog.count = 0;
ugly_list = PORT_ZAlloc(16);
if (ugly_list == NULL) {
out_of_memory();
}
*ugly_list = 0;
db = CERT_GetDefaultCertDB();
if (list_certs == 2) {
PR_fprintf(outputFD, "\nS Certificates\n");
PR_fprintf(outputFD, "- ------------\n");
} else {
PR_fprintf(outputFD, "\nObject signing certificates\n");
PR_fprintf(outputFD, "---------------------------------------\n");
}
num_trav_certs = 0;
/* Traverse ALL tokens in all slots, authenticating to them all */
rv = PK11_TraverseSlotCerts(cert_trav_callback, (void *)&list_certs,
&pwdata);
if (rv) {
PR_fprintf(outputFD, "**Traverse of ALL slots & tokens failed**\n");
return -1;
}
if (num_trav_certs == 0) {
PR_fprintf(outputFD,
"You don't appear to have any object signing certificates.\n");
}
if (list_certs == 2) {
PR_fprintf(outputFD, "- ------------\n");
} else {
PR_fprintf(outputFD, "---------------------------------------\n");
}
if (list_certs == 1) {
PR_fprintf(outputFD,
"For a list including CA's, use \"%s -L\"\n", PROGRAM_NAME);
}
if (list_certs == 2) {
PR_fprintf(outputFD,
"Certificates that can be used to sign objects have *'s to "
"their left.\n");
}
if (key) {
/* Do an analysis of the given cert */
cert = PK11_FindCertFromNickname(key, &pwdata);
if (cert) {
PR_fprintf(outputFD,
"\nThe certificate with nickname \"%s\" was found:\n",
cert->nickname);
PR_fprintf(outputFD, "\tsubject name: %s\n", cert->subjectName);
PR_fprintf(outputFD, "\tissuer name: %s\n", cert->issuerName);
PR_fprintf(outputFD, "\n");
rv = CERT_CertTimesValid(cert);
if (rv != SECSuccess) {
PR_fprintf(outputFD, "**This certificate is expired**\n");
} else {
PR_fprintf(outputFD, "This certificate is not expired.\n");
}
rv = CERT_VerifyCert(db, cert, PR_TRUE,
certUsageObjectSigner, PR_Now(), &pwdata, &errlog);
if (rv != SECSuccess) {
failed = 1;
if (errlog.count > 0) {
PR_fprintf(outputFD,
"**Certificate validation failed for the "
"following reason(s):**\n");
} else {
PR_fprintf(outputFD, "**Certificate validation failed**");
}
} else {
PR_fprintf(outputFD, "This certificate is valid.\n");
}
displayVerifyLog(&errlog);
} else {
failed = 1;
PR_fprintf(outputFD,
"The certificate with nickname \"%s\" was NOT FOUND\n", key);
}
}
if (errlog.arena != NULL) {
PORT_FreeArena(errlog.arena, PR_FALSE);
}
if (failed) {
return -1;
}
return 0;
}
