openssl: Move to a module and split thirdparty lib

Same rationale as the previous commits.

1 files changed, 865 insertions, 0 deletions

diff --git a/thirdparty/openssl/crypto/pem/pem_lib.c b/thirdparty/openssl/crypto/pem/pem_lib.c
new file mode 100644
index 0000000000..fe881d6641
--- /dev/null
+++ b/thirdparty/openssl/crypto/pem/pem_lib.c
@@ -0,0 +1,865 @@
+/* crypto/pem/pem_lib.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * 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:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     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
+ *    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
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * 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 <stdio.h>
+#include <ctype.h>
+#include "cryptlib.h"
+#include <openssl/buffer.h>
+#include <openssl/objects.h>
+#include <openssl/evp.h>
+#include <openssl/rand.h>
+#include <openssl/x509.h>
+#include <openssl/pem.h>
+#include <openssl/pkcs12.h>
+#include "asn1_locl.h"
+#ifndef OPENSSL_NO_DES
+# include <openssl/des.h>
+#endif
+#ifndef OPENSSL_NO_ENGINE
+# include <openssl/engine.h>
+#endif
+
+const char PEM_version[] = "PEM" OPENSSL_VERSION_PTEXT;
+
+#define MIN_LENGTH      4
+
+static int load_iv(char **fromp, unsigned char *to, int num);
+static int check_pem(const char *nm, const char *name);
+int pem_check_suffix(const char *pem_str, const char *suffix);
+
+int PEM_def_callback(char *buf, int num, int w, void *key)
+{
+#ifdef OPENSSL_NO_FP_API
+    /*
+     * We should not ever call the default callback routine from windows.
+     */
+    PEMerr(PEM_F_PEM_DEF_CALLBACK, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return (-1);
+#else
+    int i, j;
+    const char *prompt;
+    if (key) {
+        i = strlen(key);
+        i = (i > num) ? num : i;
+        memcpy(buf, key, i);
+        return (i);
+    }
+
+    prompt = EVP_get_pw_prompt();
+    if (prompt == NULL)
+        prompt = "Enter PEM pass phrase:";
+
+    for (;;) {
+        i = EVP_read_pw_string_min(buf, MIN_LENGTH, num, prompt, w);
+        if (i != 0) {
+            PEMerr(PEM_F_PEM_DEF_CALLBACK, PEM_R_PROBLEMS_GETTING_PASSWORD);
+            memset(buf, 0, (unsigned int)num);
+            return (-1);
+        }
+        j = strlen(buf);
+        if (j < MIN_LENGTH) {
+            fprintf(stderr,
+                    "phrase is too short, needs to be at least %d chars\n",
+                    MIN_LENGTH);
+        } else
+            break;
+    }
+    return (j);
+#endif
+}
+
+void PEM_proc_type(char *buf, int type)
+{
+    const char *str;
+
+    if (type == PEM_TYPE_ENCRYPTED)
+        str = "ENCRYPTED";
+    else if (type == PEM_TYPE_MIC_CLEAR)
+        str = "MIC-CLEAR";
+    else if (type == PEM_TYPE_MIC_ONLY)
+        str = "MIC-ONLY";
+    else
+        str = "BAD-TYPE";
+
+    BUF_strlcat(buf, "Proc-Type: 4,", PEM_BUFSIZE);
+    BUF_strlcat(buf, str, PEM_BUFSIZE);
+    BUF_strlcat(buf, "\n", PEM_BUFSIZE);
+}
+
+void PEM_dek_info(char *buf, const char *type, int len, char *str)
+{
+    static const unsigned char map[17] = "0123456789ABCDEF";
+    long i;
+    int j;
+
+    BUF_strlcat(buf, "DEK-Info: ", PEM_BUFSIZE);
+    BUF_strlcat(buf, type, PEM_BUFSIZE);
+    BUF_strlcat(buf, ",", PEM_BUFSIZE);
+    j = strlen(buf);
+    if (j + (len * 2) + 1 > PEM_BUFSIZE)
+        return;
+    for (i = 0; i < len; i++) {
+        buf[j + i * 2] = map[(str[i] >> 4) & 0x0f];
+        buf[j + i * 2 + 1] = map[(str[i]) & 0x0f];
+    }
+    buf[j + i * 2] = '\n';
+    buf[j + i * 2 + 1] = '\0';
+}
+
+#ifndef OPENSSL_NO_FP_API
+void *PEM_ASN1_read(d2i_of_void *d2i, const char *name, FILE *fp, void **x,
+                    pem_password_cb *cb, void *u)
+{
+    BIO *b;
+    void *ret;
+
+    if ((b = BIO_new(BIO_s_file())) == NULL) {
+        PEMerr(PEM_F_PEM_ASN1_READ, ERR_R_BUF_LIB);
+        return (0);
+    }
+    BIO_set_fp(b, fp, BIO_NOCLOSE);
+    ret = PEM_ASN1_read_bio(d2i, name, b, x, cb, u);
+    BIO_free(b);
+    return (ret);
+}
+#endif
+
+static int check_pem(const char *nm, const char *name)
+{
+    /* Normal matching nm and name */
+    if (!strcmp(nm, name))
+        return 1;
+
+    /* Make PEM_STRING_EVP_PKEY match any private key */
+
+    if (!strcmp(name, PEM_STRING_EVP_PKEY)) {
+        int slen;
+        const EVP_PKEY_ASN1_METHOD *ameth;
+        if (!strcmp(nm, PEM_STRING_PKCS8))
+            return 1;
+        if (!strcmp(nm, PEM_STRING_PKCS8INF))
+            return 1;
+        slen = pem_check_suffix(nm, "PRIVATE KEY");
+        if (slen > 0) {
+            /*
+             * NB: ENGINE implementations wont contain a deprecated old
+             * private key decode function so don't look for them.
+             */
+            ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen);
+            if (ameth && ameth->old_priv_decode)
+                return 1;
+        }
+        return 0;
+    }
+
+    if (!strcmp(name, PEM_STRING_PARAMETERS)) {
+        int slen;
+        const EVP_PKEY_ASN1_METHOD *ameth;
+        slen = pem_check_suffix(nm, "PARAMETERS");
+        if (slen > 0) {
+            ENGINE *e;
+            ameth = EVP_PKEY_asn1_find_str(&e, nm, slen);
+            if (ameth) {
+                int r;
+                if (ameth->param_decode)
+                    r = 1;
+                else
+                    r = 0;
+#ifndef OPENSSL_NO_ENGINE
+                if (e)
+                    ENGINE_finish(e);
+#endif
+                return r;
+            }
+        }
+        return 0;
+    }
+    /* If reading DH parameters handle X9.42 DH format too */
+    if (!strcmp(nm, PEM_STRING_DHXPARAMS) &&
+        !strcmp(name, PEM_STRING_DHPARAMS))
+        return 1;
+
+    /* Permit older strings */
+
+    if (!strcmp(nm, PEM_STRING_X509_OLD) && !strcmp(name, PEM_STRING_X509))
+        return 1;
+
+    if (!strcmp(nm, PEM_STRING_X509_REQ_OLD) &&
+        !strcmp(name, PEM_STRING_X509_REQ))
+        return 1;
+
+    /* Allow normal certs to be read as trusted certs */
+    if (!strcmp(nm, PEM_STRING_X509) &&
+        !strcmp(name, PEM_STRING_X509_TRUSTED))
+        return 1;
+
+    if (!strcmp(nm, PEM_STRING_X509_OLD) &&
+        !strcmp(name, PEM_STRING_X509_TRUSTED))
+        return 1;
+
+    /* Some CAs use PKCS#7 with CERTIFICATE headers */
+    if (!strcmp(nm, PEM_STRING_X509) && !strcmp(name, PEM_STRING_PKCS7))
+        return 1;
+
+    if (!strcmp(nm, PEM_STRING_PKCS7_SIGNED) &&
+        !strcmp(name, PEM_STRING_PKCS7))
+        return 1;
+
+#ifndef OPENSSL_NO_CMS
+    if (!strcmp(nm, PEM_STRING_X509) && !strcmp(name, PEM_STRING_CMS))
+        return 1;
+    /* Allow CMS to be read from PKCS#7 headers */
+    if (!strcmp(nm, PEM_STRING_PKCS7) && !strcmp(name, PEM_STRING_CMS))
+        return 1;
+#endif
+
+    return 0;
+}
+
+int PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm,
+                       const char *name, BIO *bp, pem_password_cb *cb,
+                       void *u)
+{
+    EVP_CIPHER_INFO cipher;
+    char *nm = NULL, *header = NULL;
+    unsigned char *data = NULL;
+    long len;
+    int ret = 0;
+
+    for (;;) {
+        if (!PEM_read_bio(bp, &nm, &header, &data, &len)) {
+            if (ERR_GET_REASON(ERR_peek_error()) == PEM_R_NO_START_LINE)
+                ERR_add_error_data(2, "Expecting: ", name);
+            return 0;
+        }
+        if (check_pem(nm, name))
+            break;
+        OPENSSL_free(nm);
+        OPENSSL_free(header);
+        OPENSSL_free(data);
+    }
+    if (!PEM_get_EVP_CIPHER_INFO(header, &cipher))
+        goto err;
+    if (!PEM_do_header(&cipher, data, &len, cb, u))
+        goto err;
+
+    *pdata = data;
+    *plen = len;
+
+    if (pnm)
+        *pnm = nm;
+
+    ret = 1;
+
+ err:
+    if (!ret || !pnm)
+        OPENSSL_free(nm);
+    OPENSSL_free(header);
+    if (!ret)
+        OPENSSL_free(data);
+    return ret;
+}
+
+#ifndef OPENSSL_NO_FP_API
+int PEM_ASN1_write(i2d_of_void *i2d, const char *name, FILE *fp,
+                   void *x, const EVP_CIPHER *enc, unsigned char *kstr,
+                   int klen, pem_password_cb *callback, void *u)
+{
+    BIO *b;
+    int ret;
+
+    if ((b = BIO_new(BIO_s_file())) == NULL) {
+        PEMerr(PEM_F_PEM_ASN1_WRITE, ERR_R_BUF_LIB);
+        return (0);
+    }
+    BIO_set_fp(b, fp, BIO_NOCLOSE);
+    ret = PEM_ASN1_write_bio(i2d, name, b, x, enc, kstr, klen, callback, u);
+    BIO_free(b);
+    return (ret);
+}
+#endif
+
+int PEM_ASN1_write_bio(i2d_of_void *i2d, const char *name, BIO *bp,
+                       void *x, const EVP_CIPHER *enc, unsigned char *kstr,
+                       int klen, pem_password_cb *callback, void *u)
+{
+    EVP_CIPHER_CTX ctx;
+    int dsize = 0, i, j, ret = 0;
+    unsigned char *p, *data = NULL;
+    const char *objstr = NULL;
+    char buf[PEM_BUFSIZE];
+    unsigned char key[EVP_MAX_KEY_LENGTH];
+    unsigned char iv[EVP_MAX_IV_LENGTH];
+
+    if (enc != NULL) {
+        objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc));
+        if (objstr == NULL || EVP_CIPHER_iv_length(enc) == 0) {
+            PEMerr(PEM_F_PEM_ASN1_WRITE_BIO, PEM_R_UNSUPPORTED_CIPHER);
+            goto err;
+        }
+    }
+
+    if ((dsize = i2d(x, NULL)) < 0) {
+        PEMerr(PEM_F_PEM_ASN1_WRITE_BIO, ERR_R_ASN1_LIB);
+        dsize = 0;
+        goto err;
+    }
+    /* dzise + 8 bytes are needed */
+    /* actually it needs the cipher block size extra... */
+    data = (unsigned char *)OPENSSL_malloc((unsigned int)dsize + 20);
+    if (data == NULL) {
+        PEMerr(PEM_F_PEM_ASN1_WRITE_BIO, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    p = data;
+    i = i2d(x, &p);
+
+    if (enc != NULL) {
+        if (kstr == NULL) {
+            if (callback == NULL)
+                klen = PEM_def_callback(buf, PEM_BUFSIZE, 1, u);
+            else
+                klen = (*callback) (buf, PEM_BUFSIZE, 1, u);
+            if (klen <= 0) {
+                PEMerr(PEM_F_PEM_ASN1_WRITE_BIO, PEM_R_READ_KEY);
+                goto err;
+            }
+#ifdef CHARSET_EBCDIC
+            /* Convert the pass phrase from EBCDIC */
+            ebcdic2ascii(buf, buf, klen);
+#endif
+            kstr = (unsigned char *)buf;
+        }
+        RAND_add(data, i, 0);   /* put in the RSA key. */
+        OPENSSL_assert(enc->iv_len <= (int)sizeof(iv));
+        if (RAND_pseudo_bytes(iv, enc->iv_len) < 0) /* Generate a salt */
+            goto err;
+        /*
+         * The 'iv' is used as the iv and as a salt.  It is NOT taken from
+         * the BytesToKey function
+         */
+        if (!EVP_BytesToKey(enc, EVP_md5(), iv, kstr, klen, 1, key, NULL))
+            goto err;
+
+        if (kstr == (unsigned char *)buf)
+            OPENSSL_cleanse(buf, PEM_BUFSIZE);
+
+        OPENSSL_assert(strlen(objstr) + 23 + 2 * enc->iv_len + 13 <=
+                       sizeof buf);
+
+        buf[0] = '\0';
+        PEM_proc_type(buf, PEM_TYPE_ENCRYPTED);
+        PEM_dek_info(buf, objstr, enc->iv_len, (char *)iv);
+        /* k=strlen(buf); */
+
+        EVP_CIPHER_CTX_init(&ctx);
+        ret = 1;
+        if (!EVP_EncryptInit_ex(&ctx, enc, NULL, key, iv)
+            || !EVP_EncryptUpdate(&ctx, data, &j, data, i)
+            || !EVP_EncryptFinal_ex(&ctx, &(data[j]), &i))
+            ret = 0;
+        EVP_CIPHER_CTX_cleanup(&ctx);
+        if (ret == 0)
+            goto err;
+        i += j;
+    } else {
+        ret = 1;
+        buf[0] = '\0';
+    }
+    i = PEM_write_bio(bp, name, buf, data, i);
+    if (i <= 0)
+        ret = 0;
+ err:
+    OPENSSL_cleanse(key, sizeof(key));
+    OPENSSL_cleanse(iv, sizeof(iv));
+    OPENSSL_cleanse((char *)&ctx, sizeof(ctx));
+    OPENSSL_cleanse(buf, PEM_BUFSIZE);
+    if (data != NULL) {
+        OPENSSL_cleanse(data, (unsigned int)dsize);
+        OPENSSL_free(data);
+    }
+    return (ret);
+}
+
+int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen,
+                  pem_password_cb *callback, void *u)
+{
+    int i = 0, j, o, klen;
+    long len;
+    EVP_CIPHER_CTX ctx;
+    unsigned char key[EVP_MAX_KEY_LENGTH];
+    char buf[PEM_BUFSIZE];
+
+    len = *plen;
+
+    if (cipher->cipher == NULL)
+        return (1);
+    if (callback == NULL)
+        klen = PEM_def_callback(buf, PEM_BUFSIZE, 0, u);
+    else
+        klen = callback(buf, PEM_BUFSIZE, 0, u);
+    if (klen <= 0) {
+        PEMerr(PEM_F_PEM_DO_HEADER, PEM_R_BAD_PASSWORD_READ);
+        return (0);
+    }
+#ifdef CHARSET_EBCDIC
+    /* Convert the pass phrase from EBCDIC */
+    ebcdic2ascii(buf, buf, klen);
+#endif
+
+    if (!EVP_BytesToKey(cipher->cipher, EVP_md5(), &(cipher->iv[0]),
+                        (unsigned char *)buf, klen, 1, key, NULL))
+        return 0;
+
+    j = (int)len;
+    EVP_CIPHER_CTX_init(&ctx);
+    o = EVP_DecryptInit_ex(&ctx, cipher->cipher, NULL, key, &(cipher->iv[0]));
+    if (o)
+        o = EVP_DecryptUpdate(&ctx, data, &i, data, j);
+    if (o)
+        o = EVP_DecryptFinal_ex(&ctx, &(data[i]), &j);
+    EVP_CIPHER_CTX_cleanup(&ctx);
+    OPENSSL_cleanse((char *)buf, sizeof(buf));
+    OPENSSL_cleanse((char *)key, sizeof(key));
+    if (o)
+        j += i;
+    else {
+        PEMerr(PEM_F_PEM_DO_HEADER, PEM_R_BAD_DECRYPT);
+        return (0);
+    }
+    *plen = j;
+    return (1);
+}
+
+int PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher)
+{
+    const EVP_CIPHER *enc = NULL;
+    char *p, c;
+    char **header_pp = &header;
+
+    cipher->cipher = NULL;
+    if ((header == NULL) || (*header == '\0') || (*header == '\n'))
+        return (1);
+    if (strncmp(header, "Proc-Type: ", 11) != 0) {
+        PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_NOT_PROC_TYPE);
+        return (0);
+    }
+    header += 11;
+    if (*header != '4')
+        return (0);
+    header++;
+    if (*header != ',')
+        return (0);
+    header++;
+    if (strncmp(header, "ENCRYPTED", 9) != 0) {
+        PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_NOT_ENCRYPTED);
+        return (0);
+    }
+    for (; (*header != '\n') && (*header != '\0'); header++) ;
+    if (*header == '\0') {
+        PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_SHORT_HEADER);
+        return (0);
+    }
+    header++;
+    if (strncmp(header, "DEK-Info: ", 10) != 0) {
+        PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_NOT_DEK_INFO);
+        return (0);
+    }
+    header += 10;
+
+    p = header;
+    for (;;) {
+        c = *header;
+#ifndef CHARSET_EBCDIC
+        if (!(((c >= 'A') && (c <= 'Z')) || (c == '-') ||
+              ((c >= '0') && (c <= '9'))))
+            break;
+#else
+        if (!(isupper(c) || (c == '-') || isdigit(c)))
+            break;
+#endif
+        header++;
+    }
+    *header = '\0';
+    cipher->cipher = enc = EVP_get_cipherbyname(p);
+    *header = c;
+    header++;
+
+    if (enc == NULL) {
+        PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_UNSUPPORTED_ENCRYPTION);
+        return (0);
+    }
+    if (!load_iv(header_pp, &(cipher->iv[0]), enc->iv_len))
+        return (0);
+
+    return (1);
+}
+
+static int load_iv(char **fromp, unsigned char *to, int num)
+{
+    int v, i;
+    char *from;
+
+    from = *fromp;
+    for (i = 0; i < num; i++)
+        to[i] = 0;
+    num *= 2;
+    for (i = 0; i < num; i++) {
+        if ((*from >= '0') && (*from <= '9'))
+            v = *from - '0';
+        else if ((*from >= 'A') && (*from <= 'F'))
+            v = *from - 'A' + 10;
+        else if ((*from >= 'a') && (*from <= 'f'))
+            v = *from - 'a' + 10;
+        else {
+            PEMerr(PEM_F_LOAD_IV, PEM_R_BAD_IV_CHARS);
+            return (0);
+        }
+        from++;
+        to[i / 2] |= v << (long)((!(i & 1)) * 4);
+    }
+
+    *fromp = from;
+    return (1);
+}
+
+#ifndef OPENSSL_NO_FP_API
+int PEM_write(FILE *fp, const char *name, const char *header,
+              const unsigned char *data, long len)
+{
+    BIO *b;
+    int ret;
+
+    if ((b = BIO_new(BIO_s_file())) == NULL) {
+        PEMerr(PEM_F_PEM_WRITE, ERR_R_BUF_LIB);
+        return (0);
+    }
+    BIO_set_fp(b, fp, BIO_NOCLOSE);
+    ret = PEM_write_bio(b, name, header, data, len);
+    BIO_free(b);
+    return (ret);
+}
+#endif
+
+int PEM_write_bio(BIO *bp, const char *name, const char *header,
+                  const unsigned char *data, long len)
+{
+    int nlen, n, i, j, outl;
+    unsigned char *buf = NULL;
+    EVP_ENCODE_CTX ctx;
+    int reason = ERR_R_BUF_LIB;
+
+    EVP_EncodeInit(&ctx);
+    nlen = strlen(name);
+
+    if ((BIO_write(bp, "-----BEGIN ", 11) != 11) ||
+        (BIO_write(bp, name, nlen) != nlen) ||
+        (BIO_write(bp, "-----\n", 6) != 6))
+        goto err;
+
+    i = strlen(header);
+    if (i > 0) {
+        if ((BIO_write(bp, header, i) != i) || (BIO_write(bp, "\n", 1) != 1))
+            goto err;
+    }
+
+    buf = OPENSSL_malloc(PEM_BUFSIZE * 8);
+    if (buf == NULL) {
+        reason = ERR_R_MALLOC_FAILURE;
+        goto err;
+    }
+
+    i = j = 0;
+    while (len > 0) {
+        n = (int)((len > (PEM_BUFSIZE * 5)) ? (PEM_BUFSIZE * 5) : len);
+        EVP_EncodeUpdate(&ctx, buf, &outl, &(data[j]), n);
+        if ((outl) && (BIO_write(bp, (char *)buf, outl) != outl))
+            goto err;
+        i += outl;
+        len -= n;
+        j += n;
+    }
+    EVP_EncodeFinal(&ctx, buf, &outl);
+    if ((outl > 0) && (BIO_write(bp, (char *)buf, outl) != outl))
+        goto err;
+    OPENSSL_cleanse(buf, PEM_BUFSIZE * 8);
+    OPENSSL_free(buf);
+    buf = NULL;
+    if ((BIO_write(bp, "-----END ", 9) != 9) ||
+        (BIO_write(bp, name, nlen) != nlen) ||
+        (BIO_write(bp, "-----\n", 6) != 6))
+        goto err;
+    return (i + outl);
+ err:
+    if (buf) {
+        OPENSSL_cleanse(buf, PEM_BUFSIZE * 8);
+        OPENSSL_free(buf);
+    }
+    PEMerr(PEM_F_PEM_WRITE_BIO, reason);
+    return (0);
+}
+
+#ifndef OPENSSL_NO_FP_API
+int PEM_read(FILE *fp, char **name, char **header, unsigned char **data,
+             long *len)
+{
+    BIO *b;
+    int ret;
+
+    if ((b = BIO_new(BIO_s_file())) == NULL) {
+        PEMerr(PEM_F_PEM_READ, ERR_R_BUF_LIB);
+        return (0);
+    }
+    BIO_set_fp(b, fp, BIO_NOCLOSE);
+    ret = PEM_read_bio(b, name, header, data, len);
+    BIO_free(b);
+    return (ret);
+}
+#endif
+
+int PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data,
+                 long *len)
+{
+    EVP_ENCODE_CTX ctx;
+    int end = 0, i, k, bl = 0, hl = 0, nohead = 0;
+    char buf[256];
+    BUF_MEM *nameB;
+    BUF_MEM *headerB;
+    BUF_MEM *dataB, *tmpB;
+
+    nameB = BUF_MEM_new();
+    headerB = BUF_MEM_new();
+    dataB = BUF_MEM_new();
+    if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL)) {
+        BUF_MEM_free(nameB);
+        BUF_MEM_free(headerB);
+        BUF_MEM_free(dataB);
+        PEMerr(PEM_F_PEM_READ_BIO, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+
+    buf[254] = '\0';
+    for (;;) {
+        i = BIO_gets(bp, buf, 254);
+
+        if (i <= 0) {
+            PEMerr(PEM_F_PEM_READ_BIO, PEM_R_NO_START_LINE);
+            goto err;
+        }
+
+        while ((i >= 0) && (buf[i] <= ' '))
+            i--;
+        buf[++i] = '\n';
+        buf[++i] = '\0';
+
+        if (strncmp(buf, "-----BEGIN ", 11) == 0) {
+            i = strlen(&(buf[11]));
+
+            if (strncmp(&(buf[11 + i - 6]), "-----\n", 6) != 0)
+                continue;
+            if (!BUF_MEM_grow(nameB, i + 9)) {
+                PEMerr(PEM_F_PEM_READ_BIO, ERR_R_MALLOC_FAILURE);
+                goto err;
+            }
+            memcpy(nameB->data, &(buf[11]), i - 6);
+            nameB->data[i - 6] = '\0';
+            break;
+        }
+    }
+    hl = 0;
+    if (!BUF_MEM_grow(headerB, 256)) {
+        PEMerr(PEM_F_PEM_READ_BIO, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    headerB->data[0] = '\0';
+    for (;;) {
+        i = BIO_gets(bp, buf, 254);
+        if (i <= 0)
+            break;
+
+        while ((i >= 0) && (buf[i] <= ' '))
+            i--;
+        buf[++i] = '\n';
+        buf[++i] = '\0';
+
+        if (buf[0] == '\n')
+            break;
+        if (!BUF_MEM_grow(headerB, hl + i + 9)) {
+            PEMerr(PEM_F_PEM_READ_BIO, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        if (strncmp(buf, "-----END ", 9) == 0) {
+            nohead = 1;
+            break;
+        }
+        memcpy(&(headerB->data[hl]), buf, i);
+        headerB->data[hl + i] = '\0';
+        hl += i;
+    }
+
+    bl = 0;
+    if (!BUF_MEM_grow(dataB, 1024)) {
+        PEMerr(PEM_F_PEM_READ_BIO, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    dataB->data[0] = '\0';
+    if (!nohead) {
+        for (;;) {
+            i = BIO_gets(bp, buf, 254);
+            if (i <= 0)
+                break;
+
+            while ((i >= 0) && (buf[i] <= ' '))
+                i--;
+            buf[++i] = '\n';
+            buf[++i] = '\0';
+
+            if (i != 65)
+                end = 1;
+            if (strncmp(buf, "-----END ", 9) == 0)
+                break;
+            if (i > 65)
+                break;
+            if (!BUF_MEM_grow_clean(dataB, i + bl + 9)) {
+                PEMerr(PEM_F_PEM_READ_BIO, ERR_R_MALLOC_FAILURE);
+                goto err;
+            }
+            memcpy(&(dataB->data[bl]), buf, i);
+            dataB->data[bl + i] = '\0';
+            bl += i;
+            if (end) {
+                buf[0] = '\0';
+                i = BIO_gets(bp, buf, 254);
+                if (i <= 0)
+                    break;
+
+                while ((i >= 0) && (buf[i] <= ' '))
+                    i--;
+                buf[++i] = '\n';
+                buf[++i] = '\0';
+
+                break;
+            }
+        }
+    } else {
+        tmpB = headerB;
+        headerB = dataB;
+        dataB = tmpB;
+        bl = hl;
+    }
+    i = strlen(nameB->data);
+    if ((strncmp(buf, "-----END ", 9) != 0) ||
+        (strncmp(nameB->data, &(buf[9]), i) != 0) ||
+        (strncmp(&(buf[9 + i]), "-----\n", 6) != 0)) {
+        PEMerr(PEM_F_PEM_READ_BIO, PEM_R_BAD_END_LINE);
+        goto err;
+    }
+
+    EVP_DecodeInit(&ctx);
+    i = EVP_DecodeUpdate(&ctx,
+                         (unsigned char *)dataB->data, &bl,
+                         (unsigned char *)dataB->data, bl);
+    if (i < 0) {
+        PEMerr(PEM_F_PEM_READ_BIO, PEM_R_BAD_BASE64_DECODE);
+        goto err;
+    }
+    i = EVP_DecodeFinal(&ctx, (unsigned char *)&(dataB->data[bl]), &k);
+    if (i < 0) {
+        PEMerr(PEM_F_PEM_READ_BIO, PEM_R_BAD_BASE64_DECODE);
+        goto err;
+    }
+    bl += k;
+
+    if (bl == 0)
+        goto err;
+    *name = nameB->data;
+    *header = headerB->data;
+    *data = (unsigned char *)dataB->data;
+    *len = bl;
+    OPENSSL_free(nameB);
+    OPENSSL_free(headerB);
+    OPENSSL_free(dataB);
+    return (1);
+ err:
+    BUF_MEM_free(nameB);
+    BUF_MEM_free(headerB);
+    BUF_MEM_free(dataB);
+    return (0);
+}
+
+/*
+ * Check pem string and return prefix length. If for example the pem_str ==
+ * "RSA PRIVATE KEY" and suffix = "PRIVATE KEY" the return value is 3 for the
+ * string "RSA".
+ */
+
+int pem_check_suffix(const char *pem_str, const char *suffix)
+{
+    int pem_len = strlen(pem_str);
+    int suffix_len = strlen(suffix);
+    const char *p;
+    if (suffix_len + 1 >= pem_len)
+        return 0;
+    p = pem_str + pem_len - suffix_len;
+    if (strcmp(p, suffix))
+        return 0;
+    p--;
+    if (*p != ' ')
+        return 0;
+    return p - pem_str;
+}