int wc_EncryptedInfoParse(EncryptedInfo* info, const char** pBuffer,
                          size_t bufSz)
{
    int         err = 0;
    const char* bufferStart;
    const char* bufferEnd;
    char*       line;
    word32      lineSz;
    char*       finish;
    word32      finishSz;
    char*       start = NULL;
    word32      startSz;
    const char* newline = NULL;

    if (info == NULL || pBuffer == NULL || bufSz == 0)
        return BAD_FUNC_ARG;

    bufferStart = *pBuffer;
    bufferEnd = bufferStart + bufSz;

    /* find encrypted info marker */
    line = XSTRNSTR(bufferStart, kProcTypeHeader,
                    min((word32)bufSz, PEM_LINE_LEN));
    if (line != NULL) {
        if (line >= bufferEnd) {
            return BUFFER_E;
        }

        lineSz = (word32)(bufferEnd - line);

        /* find DEC-Info marker */
        start = XSTRNSTR(line, kDecInfoHeader, min(lineSz, PEM_LINE_LEN));

        if (start == NULL)
            return BUFFER_E;

        /* skip dec-info and ": " */
        start += XSTRLEN(kDecInfoHeader);
        if (start >= bufferEnd)
            return BUFFER_E;

        if (start[0] == ':') {
            start++;
            if (start >= bufferEnd)
                return BUFFER_E;
        }
        if (start[0] == ' ')
            start++;

        startSz = (word32)(bufferEnd - start);
        finish = XSTRNSTR(start, ",", min(startSz, PEM_LINE_LEN));

        if ((start != NULL) && (finish != NULL) && (start < finish)) {
            if (finish >= bufferEnd) {
                return BUFFER_E;
            }

            finishSz = (word32)(bufferEnd - finish);
            newline = XSTRNSTR(finish, "\r", min(finishSz, PEM_LINE_LEN));

            /* get cipher name */
            if (NAME_SZ < (finish - start)) /* buffer size of info->name */
                return BUFFER_E;
            if (XMEMCPY(info->name, start, finish - start) == NULL)
                return BUFFER_E;
            info->name[finish - start] = '\0'; /* null term */

            /* populate info */
            err = wc_EncryptedInfoGet(info, info->name);
            if (err != 0)
                return err;

            /* get IV */
            if (finishSz < info->ivSz + 1)
                return BUFFER_E;

            if (newline == NULL) {
                newline = XSTRNSTR(finish, "\n", min(finishSz,
                                                     PEM_LINE_LEN));
            }
            if ((newline != NULL) && (newline > finish)) {
                finish++;
                info->ivSz = (word32)(newline - finish);
                if (info->ivSz > IV_SZ)
                    return BUFFER_E;
                if (XMEMCPY(info->iv, finish, info->ivSz) == NULL)
                    return BUFFER_E;
                info->set = 1;
            }
            else
                return BUFFER_E;
        }
        else
            return BUFFER_E;

        /* eat end of line characters */
        newline = SkipEndOfLineChars(newline, bufferEnd);

        /* return new headerEnd */

        *pBuffer = newline;
    }

    return err;
}
int wc_EncryptedInfoParse(EncryptedInfo* info, const char** pBuffer,
                          size_t bufSz)
{
    int         err = 0;
    const char* bufferStart;
    const char* bufferEnd;
    char*       line;
    word32      lineSz;
    char*       finish;
    word32      finishSz;
    char*       start = NULL;
    word32      startSz;
    const char* newline = NULL;

    if (info == NULL || pBuffer == NULL || bufSz == 0)
        return BAD_FUNC_ARG;

    bufferStart = *pBuffer;
    bufferEnd = bufferStart + bufSz;

     
    line = XSTRNSTR(bufferStart, kProcTypeHeader,
                    min((word32)bufSz, PEM_LINE_LEN));
    if (line != NULL) {
        if (line >= bufferEnd) {
            return BUFFER_E;
        }

        lineSz = (word32)(bufferEnd - line);

         
        start = XSTRNSTR(line, kDecInfoHeader, min(lineSz, PEM_LINE_LEN));

        if (start == NULL)
            return BUFFER_E;

         
        start += XSTRLEN(kDecInfoHeader);
        if (start >= bufferEnd)
            return BUFFER_E;

        if (start[0] == ':') {
            start++;
            if (start >= bufferEnd)
                return BUFFER_E;
        }
        if (start[0] == ' ')
            start++;

        startSz = (word32)(bufferEnd - start);
        finish = XSTRNSTR(start, ",", min(startSz, PEM_LINE_LEN));

        if ((start != NULL) && (finish != NULL) && (start < finish)) {
            if (finish >= bufferEnd) {
                return BUFFER_E;
            }

            finishSz = (word32)(bufferEnd - finish);
            newline = XSTRNSTR(finish, "\r", min(finishSz, PEM_LINE_LEN));

             
            if (NAME_SZ < (finish - start))  
                return BUFFER_E;
            if (XMEMCPY(info->name, start, finish - start) == NULL)
                return BUFFER_E;
            info->name[finish - start] = '\0';  

             
            err = wc_EncryptedInfoGet(info, info->name);
            if (err != 0)
                return err;

             
            if (finishSz < info->ivSz + 1)
                return BUFFER_E;

            if (newline == NULL) {
                newline = XSTRNSTR(finish, "\n", min(finishSz,
                                                     PEM_LINE_LEN));
            }
            if ((newline != NULL) && (newline > finish)) {
                finish++;
                info->ivSz = (word32)(newline - finish);
                if (info->ivSz > IV_SZ)
                    return BUFFER_E;
                if (XMEMCPY(info->iv, finish, info->ivSz) == NULL)
                    return BUFFER_E;
                info->set = 1;
            }
            else
                return BUFFER_E;
        }
        else
            return BUFFER_E;

         
        newline = SkipEndOfLineChars(newline, bufferEnd);

         

        *pBuffer = newline;
    }

    return err;
}