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authorLeonid Logvinov <logvinov.leon@gmail.com>2017-05-25 17:19:14 +0800
committerLeonid Logvinov <logvinov.leon@gmail.com>2017-05-25 17:19:14 +0800
commit55c491f8ea8bb0ba8cb1b856b3c42dd05c31565d (patch)
tree94dbab4d33f03f1b1299bd9e6326bdc6dabcc83b /src/ts
parentd23dbf53fd3689613f28d576d03ccfdce94b6646 (diff)
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Add generateSalt and tests for it
Diffstat (limited to 'src/ts')
-rw-r--r--src/ts/0x.js.ts11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/ts/0x.js.ts b/src/ts/0x.js.ts
index acbdd01e2..14f9f2061 100644
--- a/src/ts/0x.js.ts
+++ b/src/ts/0x.js.ts
@@ -11,6 +11,8 @@ export interface ECSignature {
s: string;
}
+const MAX_DIGITS_IN_UNSIGNED_256_INT = 78;
+
export class ZeroEx {
/**
* Verifies that the elliptic curve signature `signature` was generated
@@ -34,4 +36,13 @@ export class ZeroEx {
return false;
}
}
+ /** Generates pseudo-random 256 bits salt */
+ public static generatePseudoRandomSalt(): BigNumber.BigNumber {
+ // BigNumber.random returns a pseudo-random number between 0 & 1 with a passed in number of decimal places.
+ // Source: https://mikemcl.github.io/bignumber.js/#random
+ const randomNumber = BigNumber.random(MAX_DIGITS_IN_UNSIGNED_256_INT);
+ const factor = new BigNumber(10).pow(MAX_DIGITS_IN_UNSIGNED_256_INT - 1);
+ const salt = randomNumber.times(factor).round();
+ return salt;
+ }
}