213     const unsigned char *s1, *s2, *end;  in mbedtls_pem_read_buffer()  local
227     s1 = (unsigned char *) strstr( (const char *) data, header );  in mbedtls_pem_read_buffer()
229     if( s1 == NULL )  in mbedtls_pem_read_buffer()
234     if( s2 == NULL || s2 <= s1 )  in mbedtls_pem_read_buffer()
237     s1 += strlen( header );  in mbedtls_pem_read_buffer()
238     if( *s1 == ' '  ) s1++;  in mbedtls_pem_read_buffer()
239     if( *s1 == '\r' ) s1++;  in mbedtls_pem_read_buffer()
240     if( *s1 == '\n' ) s1++;  in mbedtls_pem_read_buffer()
252     if( memcmp( s1, "Proc-Type: 4,ENCRYPTED", 22 ) == 0 )  in mbedtls_pem_read_buffer()
258         s1 += 22;  in mbedtls_pem_read_buffer()
259         if( *s1 == '\r' ) s1++;  in mbedtls_pem_read_buffer()
260         if( *s1 == '\n' ) s1++;  in mbedtls_pem_read_buffer()
265         if( memcmp( s1, "DEK-Info: DES-EDE3-CBC,", 23 ) == 0 )  in mbedtls_pem_read_buffer()
269             s1 += 23;  in mbedtls_pem_read_buffer()
270             if( pem_get_iv( s1, pem_iv, 8 ) != 0 )  in mbedtls_pem_read_buffer()
273             s1 += 16;  in mbedtls_pem_read_buffer()
275         else if( memcmp( s1, "DEK-Info: DES-CBC,", 18 ) == 0 )  in mbedtls_pem_read_buffer()
279             s1 += 18;  in mbedtls_pem_read_buffer()
280             if( pem_get_iv( s1, pem_iv, 8) != 0 )  in mbedtls_pem_read_buffer()
283             s1 += 16;  in mbedtls_pem_read_buffer()
288         if( memcmp( s1, "DEK-Info: AES-", 14 ) == 0 )  in mbedtls_pem_read_buffer()
290             if( memcmp( s1, "DEK-Info: AES-128-CBC,", 22 ) == 0 )  in mbedtls_pem_read_buffer()
292             else if( memcmp( s1, "DEK-Info: AES-192-CBC,", 22 ) == 0 )  in mbedtls_pem_read_buffer()
294             else if( memcmp( s1, "DEK-Info: AES-256-CBC,", 22 ) == 0 )  in mbedtls_pem_read_buffer()
299             s1 += 22;  in mbedtls_pem_read_buffer()
300             if( pem_get_iv( s1, pem_iv, 16 ) != 0 )  in mbedtls_pem_read_buffer()
303             s1 += 32;  in mbedtls_pem_read_buffer()
310         if( *s1 == '\r' ) s1++;  in mbedtls_pem_read_buffer()
311         if( *s1 == '\n' ) s1++;  in mbedtls_pem_read_buffer()
319     if( s1 == s2 )  in mbedtls_pem_read_buffer()
322     ret = mbedtls_base64_decode( NULL, 0, &len, s1, s2 - s1 );  in mbedtls_pem_read_buffer()
330     if( ( ret = mbedtls_base64_decode( buf, len, &len, s1, s2 - s1 ) ) != 0 )  in mbedtls_pem_read_buffer()