java - Construct Public Key from Big Integers? -

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i construct public key constructed using c# xml rsakeys, reconstruct using java, problem receive m & e key bytes values, , construct key i've use 2 bigintegers, how construct public key ?

edit: problem mod, exp byte arrays base64 decoded, m,n of public key...

    byte[] mod  = base64.decodebase64(modulus.getbytes());     byte[] exp  = base64.decodebase64(exponent.getbytes());      int[] copymod = new int[mod.length];      (int x = 0; x < mod.length; x++) {         copymod[x] = unsignedtobytes((byte) mod[x]);     }      int[] copyexp = new int[exp.length];      (int x = 0; x < exp.length; x++) {         copyexp[x] = unsignedtobytes((byte) exp[x]);     }      string mod =  arrays.tostring(copymod);     string exp = arrays.tostring(copyexp);      biginteger m = new biginteger(mod.getbytes());     biginteger e = new biginteger(exp.getbytes());          java.security.spec.rsapublickeyspec spec = new java.security.spec.rsapublickeyspec(m, e);         keyfactory keyfactory = keyfactory.getinstance("rsa");         publickey publickey = keyfactory.generatepublic(spec);

you don't tell object type want. if want rsa public key, can (bouncycastle):

rsapublickey rsapubkey = new jcersapublickey(     new rsakeyparameters(false, modulus, exponent));

see class definition.


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