# utils/ber-utils

## Index

### Functions

* [asn1FromPublicKey](#asn1frompublickey)
* [parseBERSignature](#parsebersignature)
* [publicKeyFromAsn1](#publickeyfromasn1)
* [toArrayBuffer](#const-toarraybuffer)

## Functions

### asn1FromPublicKey

▸ **asn1FromPublicKey**(`bn`: BigNumber): *Buffer*

*Defined in* [*packages/contractkit/src/utils/ber-utils.ts:23*](https://github.com/celo-org/celo-monorepo/blob/master/packages/contractkit/src/utils/ber-utils.ts#L23)

This is used only for mocking Creates an asn1 key to emulate KMS response

**Parameters:**

| Name | Type      |
| ---- | --------- |
| `bn` | BigNumber |

**Returns:** *Buffer*

### parseBERSignature

▸ **parseBERSignature**(`b`: Buffer): *object*

*Defined in* [*packages/contractkit/src/utils/ber-utils.ts:44*](https://github.com/celo-org/celo-monorepo/blob/master/packages/contractkit/src/utils/ber-utils.ts#L44)

AWS returns DER encoded signatures but DER is valid BER

**Parameters:**

| Name | Type   |
| ---- | ------ |
| `b`  | Buffer |

**Returns:** *object*

* **r**: *Buffer*
* **s**: *Buffer*

### publicKeyFromAsn1

▸ **publicKeyFromAsn1**(`b`: Buffer): *BigNumber*

*Defined in* [*packages/contractkit/src/utils/ber-utils.ts:9*](https://github.com/celo-org/celo-monorepo/blob/master/packages/contractkit/src/utils/ber-utils.ts#L9)

**Parameters:**

| Name | Type   |
| ---- | ------ |
| `b`  | Buffer |

**Returns:** *BigNumber*

### `Const` toArrayBuffer

▸ **toArrayBuffer**(`b`: Buffer): *ArrayBuffer*

*Defined in* [*packages/contractkit/src/utils/ber-utils.ts:5*](https://github.com/celo-org/celo-monorepo/blob/master/packages/contractkit/src/utils/ber-utils.ts#L5)

**Parameters:**

| Name | Type   |
| ---- | ------ |
| `b`  | Buffer |

**Returns:** *ArrayBuffer*