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| #!/bin/bash | |
| # | |
| # This is free and unencumbered software released into the public domain. | |
| # | |
| # Requires bc, dc, openssl, xxd | |
| # | |
| # by grondilu from https://bitcointalk.org/index.php?topic=10970.msg156708#msg156708 | |
| base58=({1..9} {A..H} {J..N} {P..Z} {a..k} {m..z}) | |
| bitcoinregex="^[$(printf "%s" "${base58[@]}")]{34}$" | |
| if [ `uname -s` = 'Darwin' ]; then | |
| TAC="tail -r " | |
| else | |
| TAC="tac" | |
| fi | |
| decodeBase58() { | |
| local s=$1 | |
| for i in {0..57} | |
| do s="${s//${base58[i]}/ $i}" | |
| done | |
| dc <<< "16o0d${s// /+58*}+f" | |
| } | |
| encodeBase58() { | |
| # 58 = 0x3A | |
| echo -n "$1" | sed -e's/^\(\(00\)*\).*/\1/' -e's/00/1/g' | tr -d '\n' | |
| dc -e "16i ${1^^} [3A ~r d0<x]dsxx +f" | | |
| while read -r n; do echo -n "${base58[n]}"; done | |
| } | |
| checksum() { | |
| xxd -p -r <<<"$1" | | |
| openssl dgst -sha256 -binary | | |
| openssl dgst -sha256 -binary | | |
| xxd -p -c 80 | | |
| head -c 8 | |
| } | |
| checkBitcoinAddress() { | |
| if [[ "$1" =~ $bitcoinregex ]] | |
| then | |
| h=$(decodeBase58 "$1") | |
| checksum "00${h::${#h}-8}" | | |
| grep -qi "^${h: -8}$" | |
| else return 2 | |
| fi | |
| } | |
| hash160() { | |
| openssl dgst -sha256 -binary | | |
| openssl dgst -rmd160 -binary | | |
| xxd -p -c 80 | |
| } | |
| hash160ToAddress() { | |
| printf "%34s\n" "$(encodeBase58 "00$1$(checksum "00$1")")" | | |
| sed "y/ /1/" | |
| } | |
| publicKeyToAddress() { | |
| hash160ToAddress $( | |
| openssl ec -pubin -pubout -outform DER | | |
| tail -c 65 | | |
| hash160 | |
| ) | |
| } | |
| echo -n "Public key: " | |
| openssl ecparam -name secp256k1 -genkey | tee priv.pem | openssl ec -pubout | publicKeyToAddress | |
| echo "" | |
| echo -n "Private key: " | |
| cat priv.pem | |
| echo "" |
Just replace line 28 with:
bc <<<"ibase=16; n=$(tr '[:lower:]' '[:upper:]' <<< "$1"); while(n>0) { n%3A ; n/=3A }" |
Hello @colindean,
just testing your script - but somehow don´t understand the output.
Public is a valid BC-Address.
But I am not getting a valid private key out of it.
thank you
$ sudo bash bc_bash.sh
Public key: read EC key
writing EC key
read EC key
writing EC key
1HZB4eYki5cMLgPsR7kimnL6FxL7N1uhe9
Private key: -----BEGIN EC PARAMETERS-----
BgUrgQQACg==
-----END EC PARAMETERS-----
-----BEGIN EC PRIVATE KEY-----
MHQCAQEEIDpK9zS2PFpfhez6pnT0qgxEt9Jnlwtt72H7rQE57DY2oAcGBSuBBAAK
oUQDQgAERsSuogXokFJn9dE43n0k2jOzt75hMR9zQjy3bNNTPimswupUFATnHtwu
/qN5s0irxXFM+BHzGN4xBVXEuydLzA==
-----END EC PRIVATE KEY-----
@Rello
I thinke you should:
Get private key:
openssl ec -in priv.pem -outform DER|tail -c +8|head -c 32|xxd -p -c 32
Get public key:
openssl ec -in priv.pem -pubout -outform DER|tail -c 65|xxd -p -c 65
Am I not understanding something?
I did some tests and the address i get on generation doesn't seems to match the key?
Here are the steps taken:
- Generate the address:
generate_bitcoin_address.sh[Key at the end of this post] - Import the address to blockchain.info/wallet all good
- Send a tiny payment to the address, still all good (as expected)
- Generate the btc-private key from the EC using @shooterman oneliner:
openssl ec -in priv.pem -outform DER |tail -c +8 |head -c 32 |xxd -p -c 32==>f68f38a156d9da6747ea4318c3cc2513159e4fa9224c106ff946d900022f4e11 - Import this private key to blockchain.info/wallet, and here's the weirdness: I do actually manage to import the wallet, but I get a different address!!!
Help?
Attached data
Key generation:
# ./generate_bitcoin_address.sh
Public key: 1Ho5y31HGWViGVtj4J4J2gVrn9kHhbD11z
Private key:
-----BEGIN EC PARAMETERS-----
BgUrgQQACg==
-----END EC PARAMETERS-----
-----BEGIN EC PRIVATE KEY-----
MHQCAQEEIGktBoOg2mOYqf91vKHOwLge36XyFjRwrGFlC964uzXXoAcGBSuBBAAK
oUQDQgAEovoPa1wLZrGh0xJuoe9FA9iWrYsuqXOcg/5SYv/Fr0K0m9K/JcY0TtUZ
xPFAyU5yAjS2pVRLevjmQb0RHocDKw==
-----END EC PRIVATE KEY-----
Imported address in blockchain.info/wallet:
Retrive the btc-key:
# openssl ec -in priv.pem -outform DER |tail -c +8 |head -c 32 |xxd -p -c 32
692d0683a0da6398a9ff75bca1cec0b81edfa5f2163470ac61650bdeb8bb35d7
Import to blockchain.info/wallet
EDIT
In pursuit of the right tool i found here an alternative in python (Note you need ecdsa from pip, before you can run it).
This prints a wrong number of leading '1' characters in the address. For example, it prints 11wv6n4DaLQLHqfAUXzchLVBVv1P5CrSoH instead of 1wv6n4DaLQLHqfAUXzchLVBVv1P5CrSoH when encoding 000a62c98943feeb9ea0572ebac7bd323bc54cada0b87ca958.
@Rotsor looks like an extra leading space problem... I think this should fix that, at least it works for me:
hash160ToAddress() {
printf "%34s\n" "$(encodeBase58 "00$1$(checksum "00$1")")" |
sed -e 's/^ / /' |
sed "y/ /1/"
}
Edit
Or rather use this function, apparently it encodes the leading 00 properly:
base58=({1..9} {A..H} {J..N} {P..Z} {a..k} {m..z});
function encodeBase58() {
echo -n "$1" | sed -e's/^\(\(00\)*\).*/\1/' -e's/00/1/g' | tr -d '\n'
dc -e "16i ${1^^} [3A ~r d0<x]dsxx +f" |
while read -r n; do echo -n "${base58[n]}"; done
}
Found at https://github.com/grondilu/bitcoin-bash-tools/blob/master/bitcoin.sh
Hello, I have a question on how to generate the key of the given address, please and any info if I can give you a btc helper. I have no idea how to do this and info on priv or email [email protected]. I have btc to pay, but I do not have a private kucza please help
After far too many years of not knowing that I was getting comments on this, I've updated it a with @arno01's recommendation.
Hi, with the edited encodeBase58 function, from time to time, it's still generating addresses with a prefix 11.
Examples:
address: 11NVGRNwpqYCUiJ42TJ5iLdHt8wALLyRyV secret: 0527fee5b586ddea8837cdbf58e6f9b334e10bb95c20519db63561eda3861f01
address: 11BC84pND1z7ekq12FF7LLDKmRmQT6QhxB secret: bb35d58aecd49a012587a6093de0ffd2d4c143242fe60196900fa4e88a72480e
address: 11PgGJsvRZBynVcfSTMAnZQXLx2pnGSCNk secret: 3096e3fc4027e63cc3ca46b208b45581ded83773f798658a9b3b5fcdcb9ab3a3
address: 11PZLAC8yDV76gLv2EN7BykAS3Kor8Fcym secret: 29a7cef80bdf63571f8b93a629943475f50aa1f9e4cebc911e8ee0f3e19baa20
address: 11Bp95CTxgyWecEXxV6m3UzUiT6JutJ8VN secret: 0d5c20fd922cb9c134aecf9a4bd992af429f16b8742d91d056aeab22f2a08392
address: 11AWP79DdTHmogAiuvyokDK28LQoq1QnB2 secret: d698fd92748de1a484bcb18d1f5c9bd4f066a30eb7f56c92b6281cf68e7d7127
address: 11R1T3jv92emkonrjfkUDJdeWR7naDVuR3 secret: 51a37515a5964f5c293733a179f1072d6918249bf0c264ca903bbe8267a4a352
address: 11MNiiYjA57xKfTZo6cTCZV5Q6n3kyMFma secret: 79bbd8bd40a3e3f581aad528bc0320c525ec8a92717070d7327c879c1a597c1c
address: 11kUJeGjdUnubuuxECmWdzzMpCGLzhYBZU secret: 8ad77d1b6695cb5bce4654110aa30b62cf16e46db5d97189604019d1200f8943
address: 11wMeBcQW2QNuLXE7rfdC1KA1x6E8Bio7A secret: 25ca9ec03fa6935ed4ce36edb817fc6fd30864309520af99051a14376d623595
address: 11Nu6WymbKBmZKpiSyJEAwMM9MT495BHGZ secret: a1b55bd7d2c449a5480b67e84f774f8c1372b431b16408430cdac5626878a23b
address: 11ec8HgPZZxHkGR1og79QPwLSkuhqTNDma secret: fd93585c1fafa30ebdfc068da8579001764a4c75bb9b8bba532331f5df621e2a
address: 11yhkhxVD73YmmW7vtB153TDLdPHvBnvhZ secret: 3f8f89f30acf1e08f129d3a5d725189fdd6384cb5178c5901432c25207742b02
address: 11a6eEoWH47KCf2w5pEYbLGQ4Rn31wjxiJ secret: 0a6cfd67b4cc859321f450e6d020a6b9abbdd838a0ec4afa30976a72344f0292
Just to let you know that this issue still exists.
I welcome suggestions. I don't have the bandwidth available right now to debug it.
Is it possible to recover the public key from the bitcoin direction?
for example to encrypt messages using openssl
@b4zz4 Can you clarify what you mean? The Bitcoin address is the public address but not the public key. I think you're wanting to see it output a public key in addition to the Base58 address. That may be possible but I don't really have the bandwidth available to do it.
Negative.
Hi, I am trying to learn how to generate address on a Mac. I'm getting this error:
writing EC key
./address.sh: line 28: ibase=16; n=${1^^}; while(n>0) { n%3A ; n/=3A }: bad substitution
1111111111111111111111111111111111
Any pointers appreciated. Thanks! :-)