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Exposes String functions for X509Certificates

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Exposes String functions for X509Certificates via two function calls: save_to_string() and load_from_string(str).
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ScorpionInc
2023-04-05 17:45:55 -04:00
committed by ScorpionInc
parent fba9416fe0
commit a5b867391e
5 changed files with 49 additions and 0 deletions
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30
modules/mbedtls/crypto_mbedtls.cpp
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@@ -42,6 +42,7 @@
#endif
#define PEM_BEGIN_CRT "-----BEGIN CERTIFICATE-----\n"
#define PEM_END_CRT "-----END CERTIFICATE-----\n"
#define PEM_MIN_SIZE 54
#include <mbedtls/debug.h>
#include <mbedtls/md.h>
@@ -181,6 +182,35 @@ Error X509CertificateMbedTLS::save(String p_path) {
return OK;
}
String X509CertificateMbedTLS::save_to_string() {
String buffer;
mbedtls_x509_crt *crt = &cert;
while (crt) {
unsigned char w[4096];
size_t wrote = 0;
int ret = mbedtls_pem_write_buffer(PEM_BEGIN_CRT, PEM_END_CRT, cert.raw.p, cert.raw.len, w, sizeof(w), &wrote);
ERR_FAIL_COND_V_MSG(ret != 0 || wrote == 0, String(), "Error saving the certificate.");
buffer += String((char *)w, wrote);
crt = crt->next;
}
if (buffer.length() <= PEM_MIN_SIZE) {
// When the returned value of variable 'buffer' would consist of no Base-64 data, return an empty String instead.
return String();
}
return buffer;
}
Error X509CertificateMbedTLS::load_from_string(const String &p_string_key) {
ERR_FAIL_COND_V_MSG(locks, ERR_ALREADY_IN_USE, "Certificate is in use");
CharString cs = p_string_key.utf8();
int ret = mbedtls_x509_crt_parse(&cert, (const unsigned char *)cs.get_data(), cs.size());
ERR_FAIL_COND_V_MSG(ret, FAILED, "Error parsing some certificates: " + itos(ret));
return OK;
}
bool HMACContextMbedTLS::is_md_type_allowed(mbedtls_md_type_t p_md_type) {
switch (p_md_type) {
case MBEDTLS_MD_SHA1: