Explain the file permissions, obtained from stat system call, using st_mode

Code: #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> #include <stdio.h> #include <stdlib.h> int main(int argc, char * argv[]) { struct stat st; if( argc < 2) { fprintf(stderr, “ERROR: Require a path\n”); return 2; //return status error } if( stat(argv[1], &st) < 0) { //error, cannot stat file perror(argv[0]); //report erro with perror return 2; //return…

Details

Signature not matching the sig obtained from MyEtherWallet

I am serializing the unsigned txn in C, then I found Keccak-256 hash and I signed it with the privatekey. However, the resulting signature is not the same as in MyEtherWallet for the same values(sender,to, value..) void main() { uint8_t digest[32]; uint8_t sig[64], sig2[64], priv[32], *pby, unsigned_txn[200]={0}; const ecdsa_curve *curve = &secp256k1; uint8_t txLen_,txLen, nonce_,…

Details

Import cert into AWS ACM: ValidationException when calling the ImportCertificate operation: The certificate field contains more than one certificate

I’m trying to import some ssl certificates in PEM format into AWS ACM via aws cli. The certificates come from an nginx installation, when trying to import them with the following command: aws acm import-certificate –certificate ssl.website.com.crt –private-key ssl.website.com.key –region us-east-2 –profile default I get this error: An error occurred (ValidationException) when calling the ImportCertificate…

Details