bootlace on Nostr: more random thoughts: I have this public/private Bitcoin keypair (for this address: ...
more random thoughts:
I have this public/private Bitcoin keypair (for this address: bc1qrkr240mwcyjzd3acsqxw02jtqrlyrse4akm6st):
public: 03283df9d2b84c48cbd922eabafb7f2d263bfc27626665bb324444eef5c48eef0d
private: L53cfm29BCDeahiLRJqMiJTUa41U8MBYfPV1gQp7N7TBy5N4gsE6
How can someone encrypt something to that public key, so that (only) I can decrypt it? Are there tools for that?
Please output in a format that I can just copy and paste into an https://primal.net reply text box.
from Perplexity.ai:
To encrypt a message using your Bitcoin public key so that only you can decrypt it with your private key, you can use a method called Elliptic Curve Integrated Encryption Scheme (ECIES). Here's a general process and some tools you can use:
1. Encryption process:
- The sender uses your public key to generate a shared secret
- This shared secret is used to derive a symmetric encryption key
- The message is encrypted using the symmetric key
- The encrypted message is sent along with some additional data for decryption
2. Decryption process:
- You use your private key to regenerate the shared secret
- You derive the same symmetric key
- You decrypt the message using this key
Tools you can use:
1. eccrypto (Node.js library):
This library provides ECIES functionality for Bitcoin keys[2].
```javascript
const eccrypto = require("eccrypto");
const publicKeyBuffer = Buffer.from("03283df9d2b84c48cbd922eabafb7f2d263bfc27626665bb324444eef5c48eef0d", "hex");
eccrypto.encrypt(publicKeyBuffer, Buffer.from("Secret message")).then(function(encrypted) {
console.log("Encrypted message:", encrypted);
});
```
2. Crypto-JS (JavaScript library):
While not specifically designed for Bitcoin keys, it can be adapted for ECIES with some additional code[3].
3. OpenSSL (Command-line tool):
OpenSSL can be used for ECIES, but requires some setup and is more complex to use[3].
4. Online tools:
Be cautious with online tools, especially when dealing with sensitive data. However, for educational purposes or non-sensitive information, you can use tools like the RSA Encryption Decryption & Key Generator Tool[6].
Remember, while these methods allow for encryption using a Bitcoin public key, they are not part of the Bitcoin protocol itself. Always ensure you're using secure, well-vetted tools and methods when dealing with sensitive information.
Citations:
[1] https://fortris.com/blog/public-key-cryptography
[2] https://bitcoin.stackexchange.com/questions/80638/how-would-one-encrypt-a-message-using-a-bitcoin-public-key-and-use-its-priva
[3] https://github.com/spatie/crypto
[4] https://iancoleman.io/bitcoin-key-compression/
[5] https://bitcointalk.org/index.php?topic=5484502.0
[6] https://www.devglan.com/online-tools/rsa-encryption-decryption
[7] https://crypto.mste.illinois.edu/encryption
[8] https://play.google.com/store/apps/details?id=com.kokoschka.michael.crypto&hl=en_US
I have this public/private Bitcoin keypair (for this address: bc1qrkr240mwcyjzd3acsqxw02jtqrlyrse4akm6st):
public: 03283df9d2b84c48cbd922eabafb7f2d263bfc27626665bb324444eef5c48eef0d
private: L53cfm29BCDeahiLRJqMiJTUa41U8MBYfPV1gQp7N7TBy5N4gsE6
How can someone encrypt something to that public key, so that (only) I can decrypt it? Are there tools for that?
Please output in a format that I can just copy and paste into an https://primal.net reply text box.
from Perplexity.ai:
To encrypt a message using your Bitcoin public key so that only you can decrypt it with your private key, you can use a method called Elliptic Curve Integrated Encryption Scheme (ECIES). Here's a general process and some tools you can use:
1. Encryption process:
- The sender uses your public key to generate a shared secret
- This shared secret is used to derive a symmetric encryption key
- The message is encrypted using the symmetric key
- The encrypted message is sent along with some additional data for decryption
2. Decryption process:
- You use your private key to regenerate the shared secret
- You derive the same symmetric key
- You decrypt the message using this key
Tools you can use:
1. eccrypto (Node.js library):
This library provides ECIES functionality for Bitcoin keys[2].
```javascript
const eccrypto = require("eccrypto");
const publicKeyBuffer = Buffer.from("03283df9d2b84c48cbd922eabafb7f2d263bfc27626665bb324444eef5c48eef0d", "hex");
eccrypto.encrypt(publicKeyBuffer, Buffer.from("Secret message")).then(function(encrypted) {
console.log("Encrypted message:", encrypted);
});
```
2. Crypto-JS (JavaScript library):
While not specifically designed for Bitcoin keys, it can be adapted for ECIES with some additional code[3].
3. OpenSSL (Command-line tool):
OpenSSL can be used for ECIES, but requires some setup and is more complex to use[3].
4. Online tools:
Be cautious with online tools, especially when dealing with sensitive data. However, for educational purposes or non-sensitive information, you can use tools like the RSA Encryption Decryption & Key Generator Tool[6].
Remember, while these methods allow for encryption using a Bitcoin public key, they are not part of the Bitcoin protocol itself. Always ensure you're using secure, well-vetted tools and methods when dealing with sensitive information.
Citations:
[1] https://fortris.com/blog/public-key-cryptography
[2] https://bitcoin.stackexchange.com/questions/80638/how-would-one-encrypt-a-message-using-a-bitcoin-public-key-and-use-its-priva
[3] https://github.com/spatie/crypto
[4] https://iancoleman.io/bitcoin-key-compression/
[5] https://bitcointalk.org/index.php?topic=5484502.0
[6] https://www.devglan.com/online-tools/rsa-encryption-decryption
[7] https://crypto.mste.illinois.edu/encryption
[8] https://play.google.com/store/apps/details?id=com.kokoschka.michael.crypto&hl=en_US