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百度 银行去年新发行的理财产品更是将产品的安全性放在了首位，不但低风险产品的发行数量较2016年再度有所增长，保本类产品的占比也较2016年有所提升。
OpenSSL is a general-purpose cryptography library. Originally used by Bitcoin Core before it was replaced with libsecp256k1.
33 questions
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Command line generated address can't recover with seed phrase, what am I missing?
I have generated a bitcoin address using the following commands along with a ruby script for compression.
First I generate a key using echo "24 word seed phrase BIP 39" | openssl sha256
Then ...
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2
votes
1
answer
625
views
How to properly decrypt Android Bitcoin wallet backup from 2014?
I have a wallet backup that's encrypted and I have the password, but when I run this:
openssl enc -d -aes-256-cbc -md md5 -a -in bm2 > bitcoin-wallet-decrypted
and enter my password, I get this:
**...
1
vote
1
answer
581
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How to generate a bitcoin public key from an existing private key using openssl?
I want to generate bitcoin priv/pub key manually.
I generated random binary numbers by flipping some coins and converted them to hex.
Now,I got a bitcoin private key
in hex:...
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2
votes
1
answer
227
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Were uncompressed public keys always supported by Bitcoin?
I was wondering when compressed public keys were introduced to bitcoin, then I saw this quote from this answer:
The original Bitcoin software didn't use compressed keys only because their use was ...
- 899
3
votes
2
answers
2k
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How to Compress Public Key with OpenSSL / Bash
I generate the private and the public keys in Shell like that:
openssl ecparam -name secp256k1 -rand /dev/random -genkey -noout -out private-key.pem
openssl ec -in private-key.pem -outform DER | tail -...
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1
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2
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9k
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Proper way to get sha256 hash in c++ using openssl?
Given the following variables:
unsigned char text [] = "Test String";
unsigned int len = strlen ((const char*) text);
unsigned char hash [SHA256_DIGEST_LENGTH];
Is there any reason to do ...
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1
vote
1
answer
3k
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How to generate private/public key pairs in c++ using openssl
I have 2 questions:
How can I generate private/public key pairs with c++ and openssl? I don't want them saved to a file. I want the values to be available to my c++ program.
Given a private key, how ...
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1
vote
1
answer
124
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Block 9 Transaction 1 Output 0 ScriptPubKey openssl validation fails
I'm trying to check the public key which lies in the ScriptPubKey of output #0 of transaction #1 bloc #9 with openssl. I'm using Python to create a DER file, and openssl to check it.
ScriptPubKey ...
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0
votes
0
answers
184
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Openssl errors when building the bitcoin-core on macOS
I have been trying to build bitcoin-core on macOS as I am reading the "Mastering Bitcoin" book from Andreas Antonopoulos.
I read the instructions for building the the bitcoin-core on macOS ...
- 101
0
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0
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315
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OpenSSL error when running "make" command
I am trying to install bitcoin core on my ubuntu server.
installed necessary dependencies.
RAN :
./autogen.sh
./configure --disable-wallet --with-incompatible-bdb --with-gui=no
./configure
make
I am ...
- 107
0
votes
1
answer
844
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Signing transaction offline - manual way vs. Electrum
Being inspired by the thread (Redeeming a raw transaction step by step example required) I wanted to understand transaction signatures on the byte level.
So I created my own Linux scripts that:
...
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2
votes
2
answers
1k
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Openssl magic values? Secp256k1 and ECDSA similarities? What makes secp256k1 special?
Part 1:
Running this command seems to be a reliable way to produce a pubkey from a valid private key that for Bitcoin. Is this a correct assumption?
openssl ec -inform DER -text -noout -in <(cat &...
- 500
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votes
2
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333
views
Generate bitcoin address from public key file
Is there a way to generate a bitcoin address from public key with openssl command line ?
Thanks
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2
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3
answers
2k
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Generate public/private key for bitcoin with openssl
I want to understand how bitcoin works and I do not trust tools or bitcoin platforms.
I have read this on Internet. Can you confirm me this lines are generating a bitcoin public/private key safely ?
...
- 217
2
votes
1
answer
273
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How can you generate a bitcoin Public Key from an existing Private Key using openssl?
I know that you can generate a new key pair with a command like.
openssl ecparam -genkey -name secp256k1
And the resulting output will contain a new private key with the encoded public key.
Is it ...
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