X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fpem%2Fpem_seal.c;h=a5c1812575badbdf0d3e7d4275227942a0fb6d0e;hp=b6b4e13498eb671df935d133335524662844a9c2;hb=e48e86232e20cb3352e83c36555f1ab748605ee5;hpb=af454b5bb09bf647b4854dc277f2eefc151b2608 diff --git a/crypto/pem/pem_seal.c b/crypto/pem/pem_seal.c index b6b4e13498..a5c1812575 100644 --- a/crypto/pem/pem_seal.c +++ b/crypto/pem/pem_seal.c @@ -5,21 +5,21 @@ * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. - * + * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * + * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. - * + * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: @@ -34,10 +34,10 @@ * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from + * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * + * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE @@ -49,143 +49,143 @@ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. - * + * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ -#include /* for OPENSSL_NO_RSA */ +#include /* for OPENSSL_NO_RSA */ #ifndef OPENSSL_NO_RSA -#include -#include "cryptlib.h" -#include -#include -#include -#include -#include -#include +# include +# include "cryptlib.h" +# include +# include +# include +# include +# include +# include int PEM_SealInit(PEM_ENCODE_SEAL_CTX *ctx, EVP_CIPHER *type, EVP_MD *md_type, - unsigned char **ek, int *ekl, unsigned char *iv, EVP_PKEY **pubk, - int npubk) - { - unsigned char key[EVP_MAX_KEY_LENGTH]; - int ret= -1; - int i,j,max=0; - char *s=NULL; - - for (i=0; itype != EVP_PKEY_RSA) - { - PEMerr(PEM_F_PEM_SEALINIT,PEM_R_PUBLIC_KEY_NO_RSA); - goto err; - } - j=RSA_size(pubk[i]->pkey.rsa); - if (j > max) max=j; - } - s=(char *)OPENSSL_malloc(max*2); - if (s == NULL) - { - PEMerr(PEM_F_PEM_SEALINIT,ERR_R_MALLOC_FAILURE); - goto err; - } - - EVP_EncodeInit(&ctx->encode); - - EVP_MD_CTX_init(&ctx->md); - if (!EVP_SignInit(&ctx->md,md_type)) - goto err; - - EVP_CIPHER_CTX_init(&ctx->cipher); - ret=EVP_SealInit(&ctx->cipher,type,ek,ekl,iv,pubk,npubk); - if (ret <= 0) goto err; - - /* base64 encode the keys */ - for (i=0; ipkey.rsa)); - ekl[i]=j; - memcpy(ek[i],s,j+1); - } - - ret=npubk; -err: - if (s != NULL) OPENSSL_free(s); - OPENSSL_cleanse(key,EVP_MAX_KEY_LENGTH); - return(ret); - } + unsigned char **ek, int *ekl, unsigned char *iv, + EVP_PKEY **pubk, int npubk) +{ + unsigned char key[EVP_MAX_KEY_LENGTH]; + int ret = -1; + int i, j, max = 0; + char *s = NULL; + + for (i = 0; i < npubk; i++) { + if (pubk[i]->type != EVP_PKEY_RSA) { + PEMerr(PEM_F_PEM_SEALINIT, PEM_R_PUBLIC_KEY_NO_RSA); + goto err; + } + j = RSA_size(pubk[i]->pkey.rsa); + if (j > max) + max = j; + } + s = (char *)OPENSSL_malloc(max * 2); + if (s == NULL) { + PEMerr(PEM_F_PEM_SEALINIT, ERR_R_MALLOC_FAILURE); + goto err; + } + + EVP_EncodeInit(&ctx->encode); + + EVP_MD_CTX_init(&ctx->md); + if (!EVP_SignInit(&ctx->md, md_type)) + goto err; + + EVP_CIPHER_CTX_init(&ctx->cipher); + ret = EVP_SealInit(&ctx->cipher, type, ek, ekl, iv, pubk, npubk); + if (ret <= 0) + goto err; + + /* base64 encode the keys */ + for (i = 0; i < npubk; i++) { + j = EVP_EncodeBlock((unsigned char *)s, ek[i], + RSA_size(pubk[i]->pkey.rsa)); + ekl[i] = j; + memcpy(ek[i], s, j + 1); + } + + ret = npubk; + err: + if (s != NULL) + OPENSSL_free(s); + OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH); + return (ret); +} void PEM_SealUpdate(PEM_ENCODE_SEAL_CTX *ctx, unsigned char *out, int *outl, - unsigned char *in, int inl) - { - unsigned char buffer[1600]; - int i,j; - - *outl=0; - EVP_SignUpdate(&ctx->md,in,inl); - for (;;) - { - if (inl <= 0) break; - if (inl > 1200) - i=1200; - else - i=inl; - EVP_EncryptUpdate(&ctx->cipher,buffer,&j,in,i); - EVP_EncodeUpdate(&ctx->encode,out,&j,buffer,j); - *outl+=j; - out+=j; - in+=i; - inl-=i; - } - } + unsigned char *in, int inl) +{ + unsigned char buffer[1600]; + int i, j; + + *outl = 0; + EVP_SignUpdate(&ctx->md, in, inl); + for (;;) { + if (inl <= 0) + break; + if (inl > 1200) + i = 1200; + else + i = inl; + EVP_EncryptUpdate(&ctx->cipher, buffer, &j, in, i); + EVP_EncodeUpdate(&ctx->encode, out, &j, buffer, j); + *outl += j; + out += j; + in += i; + inl -= i; + } +} int PEM_SealFinal(PEM_ENCODE_SEAL_CTX *ctx, unsigned char *sig, int *sigl, - unsigned char *out, int *outl, EVP_PKEY *priv) - { - unsigned char *s=NULL; - int ret=0,j; - unsigned int i; - - if (priv->type != EVP_PKEY_RSA) - { - PEMerr(PEM_F_PEM_SEALFINAL,PEM_R_PUBLIC_KEY_NO_RSA); - goto err; - } - i=RSA_size(priv->pkey.rsa); - if (i < 100) i=100; - s=(unsigned char *)OPENSSL_malloc(i*2); - if (s == NULL) - { - PEMerr(PEM_F_PEM_SEALFINAL,ERR_R_MALLOC_FAILURE); - goto err; - } - - if (!EVP_EncryptFinal_ex(&ctx->cipher,s,(int *)&i)) - goto err; - EVP_EncodeUpdate(&ctx->encode,out,&j,s,i); - *outl=j; - out+=j; - EVP_EncodeFinal(&ctx->encode,out,&j); - *outl+=j; - - if (!EVP_SignFinal(&ctx->md,s,&i,priv)) goto err; - *sigl=EVP_EncodeBlock(sig,s,i); - - ret=1; -err: - EVP_MD_CTX_cleanup(&ctx->md); - EVP_CIPHER_CTX_cleanup(&ctx->cipher); - if (s != NULL) OPENSSL_free(s); - return(ret); - } -#else /* !OPENSSL_NO_RSA */ + unsigned char *out, int *outl, EVP_PKEY *priv) +{ + unsigned char *s = NULL; + int ret = 0, j; + unsigned int i; + + if (priv->type != EVP_PKEY_RSA) { + PEMerr(PEM_F_PEM_SEALFINAL, PEM_R_PUBLIC_KEY_NO_RSA); + goto err; + } + i = RSA_size(priv->pkey.rsa); + if (i < 100) + i = 100; + s = (unsigned char *)OPENSSL_malloc(i * 2); + if (s == NULL) { + PEMerr(PEM_F_PEM_SEALFINAL, ERR_R_MALLOC_FAILURE); + goto err; + } + + if (!EVP_EncryptFinal_ex(&ctx->cipher, s, (int *)&i)) + goto err; + EVP_EncodeUpdate(&ctx->encode, out, &j, s, i); + *outl = j; + out += j; + EVP_EncodeFinal(&ctx->encode, out, &j); + *outl += j; + + if (!EVP_SignFinal(&ctx->md, s, &i, priv)) + goto err; + *sigl = EVP_EncodeBlock(sig, s, i); + + ret = 1; + err: + EVP_MD_CTX_cleanup(&ctx->md); + EVP_CIPHER_CTX_cleanup(&ctx->cipher); + if (s != NULL) + OPENSSL_free(s); + return (ret); +} +#else /* !OPENSSL_NO_RSA */ # if PEDANTIC -static void *dummy=&dummy; +static void *dummy = &dummy; # endif #endif