crypto

crypto module

Encryption algorithm module

crypto module is a encryption module in FIBOS which supports the encryption algorithm such as SHA1, SHA256, SHA512, it can be used directly in js contract.

Static Function

recover_key

Recover public key from given hash and signature.

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crypto.recover_key(digest,signature);

Parameter Usage:

• digest: String, Hash result from given message.
• signature: String, given signature.

Results:

• String, return the recovered public key

Example:

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exports.hi1 = sig => {
    var r = crypto.sha256('I am alive');
    var s = crypto.recover_key(r, sig);
    console.notice(s);
}

sha1

Create a SHA1 information digest operation object

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crypto.sha1(data);

Parameter Usage:

• data: Buffer, Create while updating binary data.

Results:

• String, Return the hex encoded string for the result of the information digest

Example:

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exports.hi = v => {
    var r = crypto.sha1("abcdefg");
    console.error(r);
}

sha256

Create a SHA256 Information digest operation object

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crypto.sha256(data);

Parameter Usage:

• data: Buffer, Create while updating binary data.
  Results:
• String, Return the hex encoded string for the result of the information digest

Example:

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exports.hi = v => {
    var r = crypto.sha256("abcdefg");
    console.error(r);
}

sha512

Create a SHA512 Information digest operation object

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crypto.sha512(data);

Parameter Usage:

• data: Buffer, Create while updating binary data.

Results:

• String, Return the hex encoded string for the result of the information digest

Example:

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exports.hi = v => {
    var r = crypto.sha512("abcdefg");
    console.error(r);
}

ripemd160

Create a RIPEMD160 Information digest operation object

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crypto.ripemd160(data);

Parameter Usage:

• data: Buffer, Create while updating binary data.

Results:

• String, Return the hex encoded string for the result of the information digest

Example:

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exports.hi = v => {
    var r = crypto.ripemd160("abcdefg");
    console.error(r);
}