diff options
Diffstat (limited to 'openssl/demos/x509/mkcert.c')
| -rw-r--r-- | openssl/demos/x509/mkcert.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/openssl/demos/x509/mkcert.c b/openssl/demos/x509/mkcert.c new file mode 100644 index 000000000..c5e67b8e2 --- /dev/null +++ b/openssl/demos/x509/mkcert.c @@ -0,0 +1,172 @@ +/* Certificate creation. Demonstrates some certificate related + * operations. + */ + + +#include <stdio.h> +#include <stdlib.h> + +#include <openssl/pem.h> +#include <openssl/conf.h> +#include <openssl/x509v3.h> +#ifndef OPENSSL_NO_ENGINE +#include <openssl/engine.h> +#endif + +int mkcert(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days); +int add_ext(X509 *cert, int nid, char *value); + +int main(int argc, char **argv) + { + BIO *bio_err; + X509 *x509=NULL; + EVP_PKEY *pkey=NULL; + + CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON); + + bio_err=BIO_new_fp(stderr, BIO_NOCLOSE); + + mkcert(&x509,&pkey,512,0,365); + + RSA_print_fp(stdout,pkey->pkey.rsa,0); + X509_print_fp(stdout,x509); + + PEM_write_PrivateKey(stdout,pkey,NULL,NULL,0,NULL, NULL); + PEM_write_X509(stdout,x509); + + X509_free(x509); + EVP_PKEY_free(pkey); + +#ifndef OPENSSL_NO_ENGINE + ENGINE_cleanup(); +#endif + CRYPTO_cleanup_all_ex_data(); + + CRYPTO_mem_leaks(bio_err); + BIO_free(bio_err); + return(0); + } + +static void callback(int p, int n, void *arg) + { + char c='B'; + + if (p == 0) c='.'; + if (p == 1) c='+'; + if (p == 2) c='*'; + if (p == 3) c='\n'; + fputc(c,stderr); + } + +int mkcert(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days) + { + X509 *x; + EVP_PKEY *pk; + RSA *rsa; + X509_NAME *name=NULL; + + if ((pkeyp == NULL) || (*pkeyp == NULL)) + { + if ((pk=EVP_PKEY_new()) == NULL) + { + abort(); + return(0); + } + } + else + pk= *pkeyp; + + if ((x509p == NULL) || (*x509p == NULL)) + { + if ((x=X509_new()) == NULL) + goto err; + } + else + x= *x509p; + + rsa=RSA_generate_key(bits,RSA_F4,callback,NULL); + if (!EVP_PKEY_assign_RSA(pk,rsa)) + { + abort(); + goto err; + } + rsa=NULL; + + X509_set_version(x,2); + ASN1_INTEGER_set(X509_get_serialNumber(x),serial); + X509_gmtime_adj(X509_get_notBefore(x),0); + X509_gmtime_adj(X509_get_notAfter(x),(long)60*60*24*days); + X509_set_pubkey(x,pk); + + name=X509_get_subject_name(x); + + /* This function creates and adds the entry, working out the + * correct string type and performing checks on its length. + * Normally we'd check the return value for errors... + */ + X509_NAME_add_entry_by_txt(name,"C", + MBSTRING_ASC, "UK", -1, -1, 0); + X509_NAME_add_entry_by_txt(name,"CN", + MBSTRING_ASC, "OpenSSL Group", -1, -1, 0); + + /* Its self signed so set the issuer name to be the same as the + * subject. + */ + X509_set_issuer_name(x,name); + + /* Add various extensions: standard extensions */ + add_ext(x, NID_basic_constraints, "critical,CA:TRUE"); + add_ext(x, NID_key_usage, "critical,keyCertSign,cRLSign"); + + add_ext(x, NID_subject_key_identifier, "hash"); + + /* Some Netscape specific extensions */ + add_ext(x, NID_netscape_cert_type, "sslCA"); + + add_ext(x, NID_netscape_comment, "example comment extension"); + + +#ifdef CUSTOM_EXT + /* Maybe even add our own extension based on existing */ + { + int nid; + nid = OBJ_create("1.2.3.4", "MyAlias", "My Test Alias Extension"); + X509V3_EXT_add_alias(nid, NID_netscape_comment); + add_ext(x, nid, "example comment alias"); + } +#endif + + if (!X509_sign(x,pk,EVP_md5())) + goto err; + + *x509p=x; + *pkeyp=pk; + return(1); +err: + return(0); + } + +/* Add extension using V3 code: we can set the config file as NULL + * because we wont reference any other sections. + */ + +int add_ext(X509 *cert, int nid, char *value) + { + X509_EXTENSION *ex; + X509V3_CTX ctx; + /* This sets the 'context' of the extensions. */ + /* No configuration database */ + X509V3_set_ctx_nodb(&ctx); + /* Issuer and subject certs: both the target since it is self signed, + * no request and no CRL + */ + X509V3_set_ctx(&ctx, cert, cert, NULL, NULL, 0); + ex = X509V3_EXT_conf_nid(NULL, &ctx, nid, value); + if (!ex) + return 0; + + X509_add_ext(cert,ex,-1); + X509_EXTENSION_free(ex); + return 1; + } + |