Can your bech32 functions be used with other Blockchains?

[gitmachtl]

Hi,

thank you for your work on porting the bech32 function to pure bash. Question, would it be possible to use this also for other blockchains?

I would like to use your bech32_encode/decode functions to rebuild the following:

./bech32 stake <<< "e1876c8abaa636168c7d43623be103c6bfffcfb0337c05ffd1a7ea72e5"
stake1uxrkez465cmpdrragd3rhcgrc6lllnasxd7qtl735l489egx9yfxe

./bech32 <<< "stake1uxrkez465cmpdrragd3rhcgrc6lllnasxd7qtl735l489egx9yfxe"
e1876c8abaa636168c7d43623be103c6bfffcfb0337c05ffd1a7ea72e5

In this example a precompiled external binary (bech32) was used to encode/decode between a bech32 string and the hex-representation. Would it be possible with your routines to achieve the same results somehow?

Best regards, Martin

[grondilu]

Assuming you know your hex string corresponds to a multiple of five number of bits, I suppose the following would work :

bech32 stake "$(
    xxd -p -r <<<"e1876c8abaa636168c7d43623be103c6bfffcfb0337c05ffd1a7ea72e5" |
    base32 |
    tr A-Z2-7 "$bech32_charset" |
    tr -d '\n='
)"
bech32_decode stake1uxrkez465cmpdrragd3rhcgrc6lllnasxd7qtl735l489egx9yfxe | 
{
    read
    printf "%02x" $(convertbits 5 8 0)
    echo
}

I'm not sure what would happen if the hex string does not correspond to a multiple of five number of bits.

[gitmachtl]

Thx, let me try it.

[gitmachtl]

It works, for my usecase i have to blake2 the hex representation (one way bech conversion) before passing it further along, but it is coming to the same result:

echo "Bash Bech32:"
bech32 asset "$(
    xxd -p -r <<< "4dbf3aed7353c0901ee73b6deaef027c9f75a5f102c6346727cfe826746f6b656e72656774657374" | 
    b2sum -l 160 -b | 
    awk {'print $1'} | 
    xxd -p -r |
    base32 |
    tr A-Z2-7 "$bech32_charset" |
    tr -d '\n='
)"

echo "Bech32 Binary:"
xxd -p -r <<< "4dbf3aed7353c0901ee73b6deaef027c9f75a5f102c6346727cfe826746f6b656e72656774657374" | 
b2sum -l 160 -b | 
awk {'print $1'} |
 ./bech32 asset

Bash Bech32:
asset1utf8w3rj49jt93xy8qcl3j9p6dt34pcg5mqr66
Bech32 Binary:
asset1utf8w3rj49jt93xy8qcl3j9p6dt34pcg5mqr66