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4 changes: 2 additions & 2 deletions
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packages/docs/developer-resources/contractkit/reference/SUMMARY.md
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...es/contractkit/reference/classes/_wrappers_attestations_.attestationswrapper.md
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...ttesationservicecodeforsecurityrequest.md → ....attestationservicesecuritycoderequest.md
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...cs/developer-resources/contractkit/reference/modules/_wrappers_attestations_.md
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| import { extractSecurityCodeWithPrefix, getSecurityCodePrefix } from 'src/identity/securityCode' | ||
|
|
||
| describe(getSecurityCodePrefix, () => { | ||
| it('should compute correct hash', () => { | ||
| expect(getSecurityCodePrefix('0x000000000000000000000008')).toEqual('8') | ||
| // 0xf7f551752A78Ce650385B58364225e5ec18D96cB -> 1415591498931780605110544902041322891412830525131 | ||
| expect(getSecurityCodePrefix('0xf7f551752A78Ce650385B58364225e5ec18D96cB')).toEqual('1') | ||
| }) | ||
| }) | ||
|
|
||
| describe(extractSecurityCodeWithPrefix, () => { | ||
| it('should extract 8 digit code', () => { | ||
| expect(extractSecurityCodeWithPrefix('<#> Celo security code: 51365977 5yaJvJcZt2P')).toEqual( | ||
| '51365977' | ||
| ) | ||
| }) | ||
| it('should NOT extract not 8 digit code', () => { | ||
| expect(extractSecurityCodeWithPrefix('<#> Celo security code: 5136597 5yaJvJcZt2P')).toEqual( | ||
| null | ||
| ) | ||
| }) | ||
| }) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| import { | ||
| ActionableAttestation, | ||
| AttestationServiceSecurityCodeRequest, | ||
| AttestationsWrapper, | ||
| } from '@celo/contractkit/lib/wrappers/Attestations' | ||
| import { PhoneNumberHashDetails } from '@celo/contractkit/src/identity/odis/phone-number-identifier' | ||
| import { Address } from '@celo/utils/src/address' | ||
| import BigNumber from 'bignumber.js' | ||
| import Logger from 'src/utils/Logger' | ||
|
|
||
| const TAG = 'identity/securityCode' | ||
|
|
||
| function hashAddressToSingleDigit(address: Address): number { | ||
| return new BigNumber(address.toLowerCase()).modulo(10).toNumber() | ||
| } | ||
|
|
||
| export function getSecurityCodePrefix(issuerAddress: Address) { | ||
| return `${hashAddressToSingleDigit(issuerAddress)}` | ||
| } | ||
|
|
||
| export function extractSecurityCodeWithPrefix(message: string) { | ||
| const matches = message.match('\\s(\\d{8})\\s') | ||
| if (matches && matches.length === 2) { | ||
| return matches[1] | ||
| } | ||
| return null | ||
| } | ||
|
|
||
| export async function getAttestationCodeForSecurityCode( | ||
| attestationsWrapper: AttestationsWrapper, | ||
| phoneHashDetails: PhoneNumberHashDetails, | ||
| account: string, | ||
| attestations: ActionableAttestation[], | ||
| securityCodeWithPrefix: string | ||
| ) { | ||
| const securityCodePrefix = parseInt(securityCodeWithPrefix[0], 10) | ||
| const lookupAttestations = attestations.filter( | ||
| (attestation) => hashAddressToSingleDigit(attestation.issuer) === securityCodePrefix | ||
| ) | ||
|
|
||
| for (const attestation of lookupAttestations) { | ||
| // Try to recover the full attestation code from the matching issuer's attestation service | ||
| try { | ||
| const message = await requestValidator( | ||
| attestationsWrapper, | ||
| account, | ||
| phoneHashDetails, | ||
| attestation, | ||
| securityCodeWithPrefix.substr(1) // remove prefix | ||
| ) | ||
| return message | ||
| } catch (e) { | ||
| Logger.warn( | ||
| TAG + '@getAttestationCodeForSecurityCode', | ||
| 'Getting attestation code for security code error: ', | ||
| e | ||
| ) | ||
| continue | ||
| } | ||
| } | ||
| } | ||
|
|
||
| async function requestValidator( | ||
| attestationsWrapper: AttestationsWrapper, | ||
| account: string, | ||
| phoneHashDetails: PhoneNumberHashDetails, | ||
| attestation: ActionableAttestation, | ||
| securityCode: string | ||
| ) { | ||
| const issuer = attestation.issuer | ||
| Logger.debug( | ||
| TAG + '@getAttestationCodeFromSecurityCode', | ||
| `Revealing an attestation for issuer: ${issuer}` | ||
| ) | ||
| try { | ||
| const requestBody: AttestationServiceSecurityCodeRequest = { | ||
| account, | ||
| issuer: attestation.issuer, | ||
| phoneNumber: phoneHashDetails.e164Number, | ||
| salt: phoneHashDetails.pepper, | ||
| securityCode, | ||
| } | ||
|
|
||
| const response = await attestationsWrapper.getAttestationForSecurityCode( | ||
| attestation.attestationServiceURL, | ||
| requestBody | ||
| ) | ||
| const { ok, status } = response | ||
| const body = await response.json() | ||
| if (ok && body.attestationCode) { | ||
| return body.attestationCode | ||
| } | ||
|
|
||
| throw new Error(`Error getting security code for ${issuer}. Status code: ${status}`) | ||
| } catch (error) { | ||
| Logger.error( | ||
| TAG + '@getAttestationCodeFromSecurityCode', | ||
| `get for issuer ${issuer} failed`, | ||
| error | ||
| ) | ||
| return false | ||
| } | ||
| } |
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