Remove base64 crate (#63)

* Remove base64 crate

* Fix audit error, enable only clock feature for chrono

Author: itsyaasir

Cargo.toml

@@ -10,8 +10,7 @@ readme = "./README.md"
 license = "MIT"
 
 [dependencies]
-base64 = {version = "0.13", optional = true}
-chrono = {version = "0.4", optional = true}
+chrono = {version = "0.4", optional = true, default-features = false, features = ["clock"] }
 openssl = {version = "0.10", optional = true}
 reqwest = {version = "0.11", features = ["json"]}
 serde = {version="1.0", features= ["derive"]}
@@ -28,19 +27,19 @@ wiremock = "0.5"
 [features]
 default = [
 	"account_balance",
-	"b2b", 
+	"b2b",
 	"b2c",
 	"c2b_register",
 	"c2b_simulate",
 	"express_request",
 	"transaction_reversal",
 	"transaction_status"
 ]
-account_balance = ["dep:openssl", "dep:base64"]
-b2b = ["dep:openssl", "dep:base64"]
-b2c = ["dep:openssl", "dep:base64"]
+account_balance = ["dep:openssl"]
+b2b = ["dep:openssl"]
+b2c = ["dep:openssl"]
 c2b_register = []
 c2b_simulate = []
-express_request = ["dep:chrono", "dep:base64"]
-transaction_reversal = ["dep:openssl", "dep:base64"]
-transaction_status= ["dep:openssl", "dep:base64"]
+express_request = ["dep:chrono"]
+transaction_reversal = ["dep:openssl"]
+transaction_status= ["dep:openssl"]

src/client.rs

@@ -4,6 +4,7 @@ use crate::services::{
     MpesaExpressRequestBuilder, TransactionReversalBuilder, TransactionStatusBuilder,
 };
 use crate::MpesaError;
+use openssl::base64;
 use openssl::rsa::Padding;
 use openssl::x509::X509;
 use reqwest::Client as HttpClient;
@@ -335,7 +336,7 @@ impl<'mpesa, Env: ApiEnvironment> Mpesa<Env> {
             &mut buffer,
             Padding::PKCS1,
         )?;
-        Ok(base64::encode(buffer))
+        Ok(base64::encode_block(&buffer))
     }
 }
 

src/services/express_request.rs

@@ -3,6 +3,7 @@ use crate::constants::CommandId;
 use crate::environment::ApiEnvironment;
 use crate::errors::MpesaError;
 use chrono::prelude::Local;
+use openssl::base64;
 use serde::{Deserialize, Serialize};
 
 /// Source: [test credentials](https://developer.safaricom.co.ke/test_credentials)
@@ -99,7 +100,7 @@ impl<'mpesa, Env: ApiEnvironment> MpesaExpressRequestBuilder<'mpesa, Env> {
     /// Returns the encoded password and a timestamp string
     fn generate_password_and_timestamp(&self) -> (String, String) {
         let timestamp = Local::now().format("%Y%m%d%H%M%S").to_string();
-        let encoded_password = base64::encode(
+        let encoded_password = base64::encode_block(
             format!(
                 "{}{}{}",
                 self.business_short_code(),