Hash string using SHA-1 and base64 encode - r

Question

How to hash a string using SHA-1 and base64 encode? I have package openssl and I can use sha1 function to has a string but I don't know how to combine sha-1 and base64 encode to my string.
For testing purpose, my string is:
HY8&V5EDJO8NYT9C2011-12-13T00:44:02ZTest123
I need to SHA-1 and base64 encode to output:
nuoiyUX6m+irC5rvB4QUSycfHGc=
Please could someone kindly advice?

Answer 1

As you are using the openssl package, use the following function
openssl::base64_encode(openssl::sha1(charToRaw("HY8&V5EDJO8NYT9C2011-12-13T00:44:02ZTest123")))

Answer 2

openssl generally operates on a file,basically stdin in a byte stream.
I am passing "HY8&V5EDJO8NYT9C2011-12-13T00:44:02ZTest123" in a form of printf, In a sequence of non-0 bytes (which may or may not form valid characters in UTF-8 or other character set/encoding).
Since the input is passed from the terminal, on a keyboard. The terminal will send corresponding characters (as written on the key label) encoded in its configured character set.
Usually, set in the current locale. You can find that by using a command "locale charmap".
We have to make sure the input is first convierted to UTF-8 and then passed to openssl. that the reason i have used icovn to convert bytes to the corresponding encoding in UTF-8.
So below command can be used to convert our string in sha1 and then base64 using openssl.
printf %s "HY8&V5EDJO8NYT9C2011-12-13T00:44:02ZTest123" | iconv -t utf-8 | openssl dgst -sha1 -binary | openssl enc -base64

Answer 3

$ echo nuoiyUX6m+irC5rvB4QUSycfHGc= | base64 -d | xxd -g 1
00000000: 9e ea 22 c9 45 fa 9b e8 ab 0b 9a ef 07 84 14 4b ..".E..........K
00000010: 27 1f 1c 67
And:
$ echo -n "HY8&V5EDJO8NYT9C2011-12-13T00:44:02ZTest123" | openssl sha1
(stdin)= 9eea22c945fa9be8ab0b9aef0784144b271f1c67
And:
$ cat test.c
#include <stdio.h>
#include <string.h>
#include <openssl/sha.h>
int main()
{
unsigned char ibuf[] = "HY8&V5EDJO8NYT9C2011-12-13T00:44:02ZTest123";
unsigned char obuf[20];
SHA1(ibuf, strlen(ibuf), obuf);
int i;
for (i = 0; i < 20; i++) {
printf("%02x ", obuf[i]);
}
printf("\n");
return 0;
}
And then:
$ gcc -I /usr/local/include/ test.c /usr/local/lib/libcrypto.a -o test.exe
$ ./test.exe
9e ea 22 c9 45 fa 9b e8 ab 0b 9a ef 07 84 14 4b 27 1f 1c 67

Answer 4

Maybe a little bit late, but try
$ echo -n "HY8&V5EDJO8NYT9C2011-12-13T00:44:02ZTest123" | openssl dgst -binary -sha1 | openssl enc -base64
This will:
Echo the string to the pipe
openssl will digest the string using SHA1 algorithm and pipe it
openssl will encode the resulting digested string from step 2 into a new string using base64 algorithm
And it will be echoed back to you.